Science Education and Pedagogy

The Use of Cronbach’s Alpha When Developing and Reporting Research Instruments in Science Education

Cronbach’s alpha is a statistic commonly quoted by authors to demonstrate that tests and scales that have been constructed or adopted for research projects are fit for purpose. Cronbach’s alpha is regularly adopted in studies in science education: it was referred to in 69 different papers published in 4 leading science education journals in a single year (2015)—usually as a measure of reliability. This article explores how this statistic is used in reporting science education research and what it represents. Authors often cite alpha values with little commentary to explain why they feel this statistic is relevant and seldom interpret the result for readers beyond citing an arbitrary threshold for an acceptable value. Those authors who do offer readers qualitative descriptors interpreting alpha values adopt a diverse and seemingly arbitrary terminology. More seriously, illustrative examples from the science education literature demonstrate that alpha may be acceptable even when there are recognised problems with the scales concerned. Alpha is also sometimes inappropriately used to claim an instrument is unidimensional. It is argued that a high value of alpha offers limited evidence of the reliability of a research instrument, and that indeed a very high value may actually be undesirable when developing a test of scientific knowledge or understanding. Guidance is offered to authors reporting, and readers evaluating, studies that present Cronbach’s alpha statistic as evidence of instrument quality.

Interactive-engagement versus traditional methods: A six-thousand-student survey of mechanics test data for introductory physics courses

A survey of pre/post-test data using the Halloun–Hestenes Mechanics Diagnostic test or more recent Force Concept Inventory is reported for 62 introductory physics courses enrolling a total number of students N=6542. A consistent analysis over diverse student populations in high schools, colleges, and universities is obtained if a rough measure of the average effectiveness of a course in promoting conceptual understanding is taken to be the average normalized gain 〈g〉. The latter is defined as the ratio of the actual average gain (%〈post〉−%〈pre〉) to the maximum possible average gain (100−%〈pre〉). Fourteen “traditional” (T) courses (N=2084) which made little or no use of interactive-engagement (IE) methods achieved an average gain 〈g〉T-ave=0.23±0.04 (std dev). In sharp contrast, 48 courses (N=4458) which made substantial use of IE methods achieved an average gain 〈g〉IE-ave=0.48±0.14 (std dev), almost two standard deviations of 〈g〉IE-ave above that of the traditional courses. Results for 30 (N=3259) of the above 62 courses on the problem-solving Mechanics Baseline test of Hestenes–Wells imply that IE strategies enhance problem-solving ability. The conceptual and problem-solving test results strongly suggest that the classroom use of IE methods can increase mechanics-course effectiveness well beyond that obtained in traditional practice.

Categorization and Representation of Physics Problems by Experts and Novices*

The representation of physics problems in relation to the organization of physics knowledge is investigated in experts and novices. Four experiments examine (a) the existence of problem categories as a basis for representation; (b) differences in the categories used by experts and novices; (c) differences in the knowledge associated with the categories; and (d) features in the problems that contribute to problem categorization and representation. Results from sorting tasks and protocols reveal that experts and novices begin their problem representations with specifiably different problem categories, and completion of the representations depends on the knowledge associated with the categories. For, the experts initially abstract physics principles to approach and solve a problem representation, whereas novices base their representation and approaches on the problem's literal features.

Toward an epistemology of physics

The aim of this work is twofold: to understand the intuitive sense of mechanism that accounts for commonsense predictions, expectations, explanations, and judg-ments of plausibility concerning mechanically causal situations and to understand how those intuitive ideas contribute to and develop into school physics. To facili-tate this, I provide a framework for describing and correlating characteristics of weakly organized knowledge systems. The framework is aimed at answering, at a coarse level of detail, a set of questions central to a full theory of knowledge: What are the elements of knowledge; how do they arise; what level and kind of systematicity exists; how does the system as a whole evolve; and what can be said about the underlying cognitive mechanisms that are responsible for the normal oper-ation of the system and its evolution? The empirical base is a set of clinical interviews of undergraduate physics stu-dents trying to solve a set of specially designed problems. Observations from this core and from the existing literature are extended with informal data and synthe-sized using the general framework.

Connecting high school physics experiences, outcome expectations, physics identity, and physics career choice: A gender study

Abstract This study explores how students' physics identities are shaped by their experiences in high school physics classes and by their career outcome expectations. The theoretical framework focuses on physics identity and includes the dimensions of student performance, competence, recognition by others, and interest. Drawing data from the Persistence Research in Science and Engineering (PRiSE) project, which surveyed college English students nationally about their backgrounds, high school science experiences, and science attitudes, the study uses multiple regression to examine the responses of 3,829 students from 34 randomly selected US colleges/universities. Confirming the salience of the identity dimension for young persons' occupational plans, the measure for students' physics identity used in this study was found to strongly predict their intended choice of a physics career. Physics identity, in turn, was found to correlate positively with a desire for an intrinsically fulfilling career and negatively with a desire for personal/family time and opportunities to work with others. Physics identity was also positively predicted by several high school physics characteristics/experiences such as a focus on conceptual understanding, real‐world/contextual connections, students answering questions or making comments, students teaching classmates, and having an encouraging teacher. Even though equally beneficial for both genders, females reported experiencing a conceptual focus and real‐world/contextual connections less frequently. The explicit discussion of under‐representation of women in science was positively related to physics identity for female students but had no impact for male students. Surprisingly, several experiences that were hypothesized to be important for females' physics identity were found to be non‐significant including having female scientist guest speakers, discussion of women scientists' work, and the frequency of group work. This study exemplifies a useful theoretical framework based on identity, which can be employed to further examine persistence in science, and illustrates possible avenues for change in high school physics teaching. © 2010 Wiley Periodicals, Inc. J Res Sci Teach 47: 978–1003, 2010

The effect of concept mapping on students' anxiety and achievement in biology

Abstract The results of recent studies into the use of the concept mapping heuristic seem to demonstrate that meaningful learning results through its use in science classrooms. While this underscores the need to use more effective instructional strategies in science teaching, the issue of the intervening variable of anxiety in learning and science achievement, and the possible use of a metacognitive strategy in anxiety reduction have not been addressed. This study, therefore, sought to find out if the metacognitive strategy of concept mapping reduces anxiety and thereby enhances achievement in biology. A total of 51 (30 boys, 21 girls) senior secondary one (grade 10) students participated in this experiment. Two instruments—the Zuckerman Affect Adjective Checklist and the Biology Achievement Test—were used in pre‐ and posttest administrations to measure the treatment effect on anxiety and achievement, respectively. Findings support the stand that concept mapping is significantly more effective than the traditional/expository teaching strategy in enhancing learning in biology. In addition, it apparently reduces students' anxiety towards the learning of biology. A significant reduction of anxiety was noticed for male subjects.

Effects of two teaching methods on the achievement in and attitude to biology of students of different levels of scientific literacy

Relationship between STS approach, scientific literacy, and achievement in biology

Abstract This study set out to investigate the relationship between STS approach, scientific literacy (SL), and achievement in biology. A quasi‐experimental design of the nonequivalent group was employed. Four secondary schools, eight teachers, and 246 students from Nigeria were involved in the study. Two classes were randomly selected from each school and assigned to either the experimental or control group. Two instruments were used to collect data: an Achievement Test on Reproduction and Family Planning and a SL Scale. Results showed that there is no relationship between SL and achievement in biology. The split‐wise posttest regression showed a weak positive relationship between SL and achievement in biology for the experimental group and a no relationship for the control group. However, STS approach mediated between SL and achievement to effect a slightly stronger significant positive relationship. The slope of SL was greater when we controlled for instruction showing that the relationship between SL and achievement is not spurious when instruction is taken into account. We therefore conclude that STS approach might be affecting other variables in the science classroom that in turn affect achievement in the sciences. © 2002 Wiley Periodicals, Inc. Sci Ed 87: 31–39, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/sce.10012

Effects of discovery and expository instructional methods on the attitude of students to biology

Abstract The effects of discovery and expository instructional methods on the attitude of students to biology was investigated. The sample consisted of 240 Form IV biology students randomly drawn from six selected secondary schools in the Oyo state of Nigeria. They were assigned into two groups—experimental and control. The experimental group was exposed to the discovery method, and the control group was taught using the expository method. The science class of Form IV in each of the six schools was selected intact for the study. A nonrandomized pretest‐posttest control group design was employed. The major instrument was the 40–item Scientific Attitude Questionnaire (SAQ). It is a Likert‐type questionnaire using five scales. Two hypotheses were tested. Analyses of the results showed that the experimental group evinced a significantly more favorable attitude to biology than the control group (t = 8.87, p < 0.01). It was also found that the high, average‐, and low‐ability groups in the experimental class evinced a more favorable attitude to biology than their counterparts in the control class. However, there was no significant difference in the attitude of male and female students exposed to the discovery and expository methods (F1,227 = 0.07, p > 0.999). The article concludes with a recommendation that science learning using the discovery method may enable the learner to evince more a favorable attitude toward problem recognition and problem solving than when learning is done by the expository method.

The effect of concept mapping instructional strategy on the biology achievement of senior secondary school slow learners

The study investigated the comparative effectiveness of the expository and concept mapping instructional strategy of presenting secondary school biology concepts to slow learners. One hundred and twenty four biology slow learners were identified and randomly assigned to the expository group (n=62) and concept mapping group (n=62) and respectively taught the concept of photosynthesis. The groups were post-tested after two weeks of teaching for any significant differences in their biology achievement. Analysis of post-test scores indicated that the group taught by the concept mapping instructional strategy performed significantly (p<0.05) better than their expository group counterparts. Specifically, female slow learners taught with the concept mapping instructional strategy performed significantly (p<0.05) better than their male counterparts taught by the same method. These results have implications for biology teacher preparation, especially in the areas of teaching females and identifying slow learners and adopting effective methods of tackling their problems

Effects of Field Studies on Learning Outcome in Biology

The major purpose of this study was to determine the effects of field experiences on students’ knowledge of process of science and biology achievement. The design of the study was experimental, 2 x 2, pre-test, post-test control group design. The sample of the study consisted of 100 biology students in two intact classes. Four research questions were raised and collapsed to four hypotheses. The first three hypotheses were tested with t-test statistic at 0.05 level of significance. The fourth hypothesis was tested with Pearson Product Moment Correlation Statistic. The major findings of this study included: a significance difference in process of science scores between pre-test and posttest of field trip students; a significant difference in process of science test scores between students exposed to field trip experiences and those who were not exposed; a significant difference in biology achievement test scores between students exposed to field trip experiences and those who were not; and a strong correlation between process of science score and biology achievement score. It was concluded that field trip experiences enhanced students’ understanding of process of science, improved students’ attitude towards biology and significantly influenced their biology achievement.

Instructional Materials as Correlates of Students’ Academic Performance in Biology in Senior Secondary Schools in Osun State

A Study of the Literature on Lab-Based Instruction in Biology

We analyzed the practitioner literature on lab-based instruction in biology in The American Biology Teacher between 2007 and 2012. We investigated what laboratory learning looks like in biology classrooms, what topics are addressed, what instructional methods and activities are described, and what is being learned about student outcomes. The practitioner literature reveals a focus on novel and innovative labs, and gaps in some biology topics. There is little description of student learning, but motivation and engagement are a primary concern of authors. There is little evidence of students addressing the nature of science in laboratories, and too few opportunities for authentic exploration of phenomena. We suggest that biology instruction can be strengthened by more rigorous practitioner research through increased professional collaboration between teachers and education researchers, increased focus on the synergy between content and teaching practice, and more rigor in reporting student outcomes.

In search of a more effective interaction pattern in biology laboratories

The development of scientific process skills is central to laboratory work in biology. A search for the laboratory interaction pattern that is most potent in the development of these skills is described. 720 secondary class three biology students were involved in a pre-test, treatment, post-test experiment in which competitive interaction was found to be superior to cooperative and individualistic interaction patterns in promoting the development of process/laboratory skills.

Influence of Teacher-Centered and Student-Centered Teaching Methods on the Academic Achievement of Post-Basic Students in Biology in Delta State, Nigeria

Teaching methods are essential for effective teaching and learning and to a great extent influence academic achievement of students. The objective of this study therefore was to examine the influence of teaching methods on the academic achievement of senior secondary school students in Biology in Oshimili South Local Government Area of Delta State. The descriptive survey research method was adopted in the study. Two research questions were formulated to guide the study. The population of the study comprised 1,550 biology students in public schools in Oshimili South Local Government Area of Delta State. Simple random sampling technique was used to select forty biology students from five randomly selected schools making it a total of two hundred (200) students. A questionnaire titled “Influence of Teaching Methods on Students' Academic Achievement in Biology Questionnaire (ITMSAABQ) was the main instrument for data collection. Cronbach Alpha analysis was used to test for the reliability of the instrument and it was found reliable with a reliability co-efficient of 0.75. Data collected was analyzed using descriptive statistics of frequency counts, percentages, mean, and standard deviation. Findings from the study revealed that student-centered teaching method increases students’ academic achievement while teacher-centered teaching methods decreases students' academic achievement in biology. The study recommended that teachers should create an environment that will enable students participate fully in the teaching-learning process of biology. Also, State Education Boards should organize seminars to educate biology teachers on the need for and how to use innovative methods in teaching biology.

Understanding kinematics graphs using MBL tools, simulations and graph samples in an interactive engagement context in a Ghanaian university

Many students have problems when it comes to describing the shapes of displacement, velocity and acceleration-time graphs (x, v, a-t graphs), conversion of graphs from one form into another, and calculating and getting the meaning of slopes and areas under kinematics graphs. They often describe shapes of graphs as pictures and give interpretation without taking into cognizance of the type of graph being considered. In this study, 37 first year university physics students (Group One: 17 students and Group Two: 20 students) at the University of Education in Winneba (Ghana) in two consecutive years, were introduced to the use of microcomputer based laboratory (MBL) tools; simulations and graph samples to practice and describe the shapes of kinematics graphs; conversion of graphs from one form to the other; calculation of slopes and areas under kinematics graphs, and their meanings, all in an interactive engagement teaching. Students were made to answer the "Test of Understanding Graphs in Kinematics" (TUG-K) before and after the introduction of the use of MBL tools, simulations and graph samples. Students' scores were compiled and converted to mean proportion scores and average normalized gain 〈 g 〉, under the four concepts "Area under the graph (meaning and calculation); Slope (meaning and calculation); Graph description; and Graph transformation". The results indicate that the first year university students in the two groups all did better in describing the shapes of kinematics graphs, transforming kinematics graphs, calculating and getting the meaning of slopes and areas under kinematics graphs when they were tested with the same instrument after instruction in kinematics. This goes to show that MBL tools, simulations and graph samples when used in an interactive engagement manner can improve the teaching and learning of kinematics graphs in physics.

Concept Mapping Strategy: An Effective Tool for Improving Students’ Academic Achievement in Biology

The study investigated the use of concept mapping teaching method on secondary school students’ academic achievement in biology. Two hypotheses tested at 0.05 level of significance guided the study. The design of the study was quasi-experimental design with 122 Senior Secondary students selected purposively from two senior secondary schools in Adamawa state. Instrument used for data collection was an achievement test tagged Biology Students’ Achievement Test (BSAT) adapted from WAEC tests 2005 to 2010. The instrument was content validated by three experts and Cronbach alpha formula was used for testing its reliability. The reliability coefficient of 0.78 was obtained. The treatment lasted for six weeks and data were analyzed using one-way Analysis of Covariance (ANCOVA). The result revealed that, concept mapping method enhanced students’ academic achievement in biology. Furthermore, there was no significant difference between male and female students in the experimental group. It was recommended that, concept mapping method should be incorporated in the teaching of biology for meaningful learning and that workshops should be organized for in-service and practicing teachers on how to use concept mapping strategy.

TIMSS 2011 Science Assessment Results: A Review of Ghana’s Performance

This paper reviews Ghana’s performance in the TIMSS 2011 survey in comparison with other African and some highperforming countries which participated in the TIMSS assessment. Students’ achievement in the science contentareas assessed were summarized and teacher preparation constructs of teachers of the students who took part in theassessment explored with the aim of finding any possible linkage between teacher preparation and studentsachievement. Two set of reviews were done. First, results on the eighth grade (JHS 2) science content achievement inbiology, chemistry, physics, and earth science for Ghana, Morocco and Tunisia were compared. The second reviewcompared how Ghana prepares her teachers to Finland and Singapore who were among the first five performingcountries on the TIMSS 2011 assessment. Some mismatch was identified in terms of teacher preparation andstudents’ achievement in the case of Ghana. Ghanaian teachers scored relatively high on most of the constructs thatwere measured by the TIMSS report under teacher preparation but these were not reflected in the students’achievement. In view of this, it is recommended that other indicators such as classroom instruction, resources forteaching science, and school climate are investigated with the aim of finding any other underlying factors that couldaccount for the mismatch between Ghanaian students’ achievement on the TIMSS science assessment and teachers’preparation.

Physics Teachers’ Views on their Initial Teacher Education

This paper explores New Zealand (NZ) physics teachers’ and physics educators’ views about Initial Teacher Education (ITE). Perspectives of physics teachers nationally indicated that in general, teachers considered themselves not well-prepared in some content areas including electronics, modern physics, and atomic and nuclear physics. This may be because in NZ, physics teachers have usually gained their content knowledge from an undergraduate science degree where they may have only taken one or two courses in physics. One year postgraduate teacher education programmes do not have sufficient time to cover the physics content taught in the final three years of schooling. The implications for ITE of physics teachers are discussed in terms of the shifts needed to help them to identify the gaps in their content knowledge and to develop their conceptual understanding of physics.

Junior High School Teachers’ Attitudes Toward Inquiry-Based Science Teaching: Enabling or Disabling Dispositions?

This study sought to examine whether junior high school teachers’ attitudes are enabling or disabling dispositions toward inquiry-based science teaching. We used concurrent triangulation mixed methods design involving surveys and multiple case studies to collect quantitative and qualitative data. We sampled 308 integrated science teachers and a subsample of 18 teachers from junior high schools in urban and rural areas. Validity and reliability of the questionnaire were satisfactory for research. Credibility and dependability of the semi-structured interview schedule were also sufficient. Findings suggest that most junior high school teachers in the study context hold weak unfavourable attitudes that are disabling dispositions toward inquiry-based science teaching. Findings also suggest that the combination of societal subjective norms, perceived context dependency, and weak unfavourable attitudes of most junior high school teachers adversely influence their intentions and behaviours toward inquiry-based science teaching. Findings further suggest that most teachers in the study context developed weak unfavourable attitudes partly because they never had inquiry-based science teaching and learning experiences when they were students. Again, the teachers developed weak general attitudes toward science teaching partly because most science teaching and learning experiences they had were in specific subjects such as biology, chemistry, and physics instead of general (integrated) science. We recommend frequent attitude-focused inquiry-based science in-service trainings for junior high school teachers. We also recommend reforms in education that engages preservice teachers in attitude-focused inquiry-based science teaching and learning experiences.

A Survey of Biology Teachers Use of Activity-Oriented, Laboratory Practical Exercises to Promote Functional Biology Education

A major goal of science education is fostering students’ intellectual competencies such as independent learning, problem-solving, decision-making and critical thinking. This goal can only be achieved when students are actively involved in the teaching-learning process through activity-based, practical-oriented instructional methods involving the use of laboratories. This study therefore, investigated the extent to which the biology teachers employ activity-oriented, laboratory/practical instructional methods in order to improve the learning outcome of their students. The descriptive survey involved 73 Biology teachers randomly selected from all the six education zones of Anambra state, Nigeria. Four research questions were posed and four hypotheses were formulated to guide the conduct of the study. A 32-item structured questionnaire which has reliability co-efficient of 0.82 was used to collect data. Data were analyzed using mean, standard deviation and t-tests. Results show that Biology teachers adopt practical-oriented strategies in teaching biology, conduct practical activities to a high extent, and perceive practical exercises as essential to effective teaching and learning of the subject. Provision of adequate number of laboratory materials, employment of adequate number of biology teachers, making provision for well designed laboratory activities in the curriculum and training of teachers on how to effectively combine theory with practical are some of the strategies that will encourage biology teachers to conduct practical lessons. There was no significant difference between male and female biology teachers in their responses to the different aspects investigated. Based on these findings, some recommendations were made that include that curriculum designers should incorporate guides for practical activities that go with each topic in the curriculum so as to encourage the teachers to teach theory with practical as a unified whole to increase students’ understanding and internalization of the facts and ideas taught.

EXAMINING THE EFFECTIVENESS OF SIMULATION-BASED LESSONS IN IMPROVING THE TEACHING OF HIGH SCHOOL PHYSICS: GHANAIAN PRE SERVICE TEACHERS’ EXPERIENCES

Teacher-dominated approach is still the most adopted teaching strategy in Ghanaian high schools despite the Government of Ghana’s initiatives to support technology-oriented, learner-centred and interactive teaching practices. This study examined the effectiveness of simulation-based lessons in improving the teaching of high school physics by adapting the five dimensions for meaningful learning with information and communication technology model by Howland, Jonassen and Marra (2012) as a theoretical lens. Using an explanatory case study design, eight pre-service physics teachers from the University of Cape Coast, Ghana were engaged to develop and design simulation-based physics lessons in design teams and enact these lessons among themselves in microteaching sessions. Results showed that the simulation-based lessons were effective in that the pre-service teachers’ teaching practices improved to be learner-centred and interactive. The results also suggested that although a combination of all the dimensions of meaningful learning was key to the effectiveness observed with each of the simulation-based lessons, the Cooperative dimension was found to possess a unique potential for sustaining the other dimensions in order to facilitate improvements in the teaching of physics with simulations. Keywords: high school physics, ICT, interactive teaching, pre-service teachers, simulation-based lessons.

Effect of Practical Work on Physics Learning Effectiveness: A Case of a Senior High School in Ghana

This study investigated the effect of practical work on students’ academic achievement, acquisition of scientific process, skills and attitudes towards the study of selected topics in electricity. Fifty (50) Form Two Physics students from a Senior High Technical School in the Kwaebibirem Municipal of the Eastern Region of Ghana participated in the study. Instruments used to collect data included a student learning evaluation form, questionnaire and pre-and-post-intervention tests. Data was analysed using descriptive statistics and Microsoft Excel 2010 Computer Software. The findings indicated that the students’ academic performance were enhanced, they acquired important scientific process skills needed for science practical work and developed positive attitudes towards science practical work. The study recommended that Physics teachers should adopt practical work as a teaching technique and as well be encouraged to teach concepts alongside with practical activities.

Teaching and Learning Physics in Senior High Schools in Ghana: The Challenges and the Way Forward

Aim: Considering the technological age that we find ourselves in this 21st century, it would be expected that, the number of students willing to study physics will increase exponentially. However, reports indicate a sharp reduction of students in physics classrooms. This study therefore sought to identify the challenges and way forward for improving physics teaching and learning in Senior High Schools in Ghana. Study Design: Descriptive cross-sectional survey was used for the study. Methodology: The main instrument used for the study was questionnaire. The sample size for the study comprised both physics teachers and students. The sample size for the teachers was made up of 38 teachers which comprised 34 males and 4 females who were selected using the convenient sampling approach. The sample size for the students consisted of 750 students selected by stratified sampling of which 520 were males and 230 were females. Results: While the teachers perceived the most important factor affecting the teaching and learning of physics to be students-related problem, the students on the other hand perceived the major challenge affecting the teaching and learning of physics to be teacher-related. For both teachers and students, provision of adequate resources like well-equipped laboratories for teaching and learning is an assured way of improving the teaching and learning of physics in senior high schools in Ghana. Conclusions: The challenges in teaching physics as perceived by both teachers and students are teacher related, student-related and resource-constraints It was recommended that the government must make conscious effort to provide the schools with adequate science resources to facilitate the practical approach to teaching and learning of physics.

Modelling and Assessing Experimental Competencies in Physics

Improving students’ performance and conceptual understanding of heat transfer using demonstration method

One of the physics topics difficult to understand among students at senior high schools (SHSs) is heat transfer. Various reasons have been advanced in an attempt to rationalize this difficulty. This study through an action research design was conducted to improve students’ performance and conceptual understanding of heat transfer at Oti Boateng Senior High School, Koforidua. The instruments used for the study were questionnaires, pre- and post-test. The study identified rote learning, inadequate understanding of concepts among others as the cause of difficulty in problem solving among students. The study revealed that although there are different methods of teaching, the efficacy of the demonstration method cannot be downplayed considering its role in improving students’ academic performance. The study concluded that for effective teaching and learning of heat transfer at SHS, it is important for teachers to employ the demonstration method in their teaching.

Physics students’ conceptual understanding of “<i>gravity and free fall</i>”

The focus of this study is to ascertain the conceptual understanding students of Bolgatanga Girls Senior High School (BGSHS) have in “<i>gravity and free fall</i>”. Descriptive research design (cross-sectional survey) was used in this study as a method of collecting information. Out of 183 second and third year students, 43 of them were randomly selected and involved in the study. Students were given 10 conceptual based test items relating to “<i>gravity and free fall</i>” to respond to. Students were required to respond true/false and provide reasons for their response. It was found that majority of the students had the misconception that gravity is selective and therefore acts more on heavier objects compared to lighter objects. As a result, they are of the opinion that larger object should hit the ground first before a light object dropped from the same height, which is not scientifically accurate. Based on the findings of the study, it was recommended that physics teachers in BGSHS should carefully pay attention to students’ misconceptions and be guided by it when teaching.

Physics Teachers’ Views on their Initial Teacher Education

This paper explores New Zealand (NZ) physics teachers’ and physics educators’ views about Initial Teacher Education (ITE). Perspectives of physics teachers nationally indicated that in general, teachers considered themselves not well-prepared in some content areas including electronics, modern physics, and atomic and nuclear physics. This may be because in NZ, physics teachers have usually gained their content knowledge from an undergraduate science degree where they may have only taken one or two courses in physics. One year postgraduate teacher education programmes do not have sufficient time to cover the physics content taught in the final three years of schooling. The implications for ITE of physics teachers are discussed in terms of the shifts needed to help them to identify the gaps in their content knowledge and to develop their conceptual understanding of physics.

Integration of Practical Work into Teaching and Learning of Physics at the Senior High School Level

Practical work forms an integral part of teaching and learning as enshrined in the teaching physics syllabus designed for senior high schools in Ghana. This presupposes that the final grade of students is influenced by their performance in physics practical work. Hence, practical work in physics needs to be utilised to improve students’ performance. This study, therefore, sought to examine how practical work is integrated into the teaching and learning of physics at the senior high school level in the Volta Region of Ghana. In all, 16 physics teachers and 212 science students randomly sampled took part in the study. It was found that though teachers accept practical work as an essential ingredient for students’ understanding of concepts, they are not up-to-date on how practical work should be integrated into the teaching and learning of physics as prescribed by the syllabus for physics. Also, the teaching of practical work is done via group work, hands-on activity, interactive demonstrations, discussion and lecture. It is recommended that teachers should adopt integrating practical work into lessons instead of separating them from theory.

Physics classroom interactions: Teaching strategies and practices

This study investigated the interactions that occurred as part of the learning from a national survey of high school physics teachers in New Zealand (NZ) in relation to decile ranking. Specifically, the study investigated how often particular teaching strategies and practices such as: teaching approaches, teacher feedback and guidance, and ICT usage, occurred during physics teaching. Data were analyzed using descriptive statistical and inferential statistics – MANOVA. Among other things, the study revealed that learners were not exposed to the teaching methods that potentially give them the chance to observe, engage and/or discover expert strategies in context. There was a lack of use of problem-based or inquiry learning models for learning. However, there was no significant difference between teaching in the various decile rankings. The implications of the findings are discussed.

An investigation into senior high school (shs3) physics students understanding of data processing of length and time of scientific measurement in the Volta region of Ghana

Serious doubt have been raised in the Physics Chief Examiner's report of the West African Examination Council of Ghana of both physics-1 (theory) and physics-2 (practical) as to whether science students really understand measurement of physical quantities. In view of this, the researcher use a mixed designed method to gather data from SHS3 physics students' on their understanding of data processing of length and time. A population of 422 SHS3 physics students were sampled and a three item questionnaire on distance and time administered in order to find out whether the problem enumerated by the Chief Examiners' of Physics concerning physics students exist and were either with the set paradigm or the point paradigm concept. Also twenty SHS3 physics were purposively selected and interviewed in order to validate students' written responses. The study revealed that students do not have an understanding of using repeat in data set, anomaly in data set and straight line graph of data by the set paradigm concept i.e. all the three items on data processing of students (i.e. UR, AN, and SLG) were in line with the point paradigm concept of measurement. Also students seemed to have difficulty in plotting straight line graph by the use of lines of best fit.

Role of Practical Activity Method in Improving Understanding and Problem-Solving Skills of Physics Students

The objective of this study was to use the practical activity method to improve the understanding and problem-solving skills of physics students at School A in the Eastern Region of Ghana. The study used 29 students in the Form 1. Sc. 1 class, of which 27 were boys and two were girls. The instruments used to gather data were achievement tests and observations. Simple statistical methods such as pre-intervention lessons were designed and administered to find the reasons students had problems understanding physics concepts and their inability to solve problems in physics. Several activities were undertaken to enhance students’ understanding and problem-solving skills. This research revealed that the use of practical activity-based methods in the teaching and learning process of physics enhanced students’ performance remarkably. The findings from this research showed that students’ performance was elevated during the series of lessons administered. The students got a better understanding of concepts and were able to make real-life applications of concepts. This subsequently increased their contributions and participation during lessons. Conclusions were drawn and suggestions were made for teachers who are faced with similar problems of improving students’ performance in physics.

Exploring the factors influencing undergraduate students’ decision to pursue physics at the University of Education, Winneba

Background Over the years, the number of prospective students intending to study physics at the University of Education, Winneba (UEW) has gradually declined. This has drastically affected the number of trained physics teachers in the country. As a matter of urgency, there is therefore the need to look at the factors that influence the choice of physics at the undergraduate level in UEW in order to encourage more students to enrol in the course.Purpose This study sought to find out the factors motivating the students at UEW, to major in physics, despite the general belief that the course is very difficult.Sample The participants of this study were physics students at the Department of Physics Education, UEW, Ghana. Purposive sampling was used to select 101 respondents.Design and Methods Questionnaire was used in gathering data. Interview and focused group discussion were used to validate the responses of the participants to the questionnaire. The questionnaire was analyzed using R version 4.22. Additionally, Relative Importance Index (RII) was used to rank the Likert form items.Results The findings indicated that students ranked interest (RII = 0.92) as their major motivating factor to read physics in the Department. Students also claimed that their parents had little influence on their decision to study physics. Whiles professional teachers used it as a conduit to secure study leave with pay from GES. Students who had difficulty in the subject also attributed it to their long delay at home after completing senior high school before gaining admission to the University.Conclusions The study recommends that there should be a concerted effort to arouse the interest of physics learners at the lower levels of education in Ghana by the Department of Physics Education, Winneba and other stakeholders in order to increase the enrolment of students in physics.

Developing Preservice Teachers’ Scientific Problem-Solving Skills Using a Pragmatic Approach to Physics: The Case of Gbewaa College of Education

This research aimed at developing preservice-teachers’ scientific problem-solving skills after taking part in active learning in an introductory science lesson in semester two of the 2020/2021 academic year. The researchers engaged 150 level hundred preservice-teachers for five (5) weeks. Pre-test and post-test designs were employed to collect data for both quantitative and qualitative analyses. Ten active learning practices were performed throughout the semester. The problem-solving assessment used was T-TEL and rubrics were used to develop the research instrument to evaluate preservice teachers’ problem-solving skills. A Sample group interview was conducted to obtain qualitative data on preservice teachers’ opinions of active learning activities. A sample t-test was used to compare problem-solving pre-test and post-test scores in the class. The data collected and content analysis was used to summarize preservice teachers’ opinions. The results revealed their problem-solving skills were highly improved after taking part in active learning processes at 0.05 confident levels. Preservice teachers expressed their opinions positively toward active learning processes and showed a willingness to participate actively in the next lesson using the same learning approach.

Attitude of Students Towards the Study of Physics: A Case of Tamale College of Education, Ghana.

The study examined the attitude of third-year science and mathematics students towards the study of Physics in the Tamale College of Education, Ghana. A case study involving a sample of one hundred and thirty–three students was adopted for the study. Using a structured questionnaire, data was collected from the selected sample. The Likert rating scale was adopted to indicate the extent of agreement or disagreement. General findings from the study indicated that the majority of the respondents had a negative perception towards the study of Physics. The research recommended that preferably only students who offered Elective Physics at the Senior High School level should be admitted to study Physics at the College level as this would facilitate the smooth teaching and learning of the subject. It was also suggested that Physics tutors should use innovative strategies to make the teaching and learning of the subject interesting and attractive. Keywords: Physics, attitude, students, tutor, positive, negative.

Formative Assessment Strategies of Senior High School Physics Teachers in Selected Ashanti Region Districts, Ghana

The study examined the formative assessment strategies senior high school physics teachers in selected districts of the Ashanti Region practice in their classrooms. Using a descriptive survey design, the study purposively selected 108 physics teachers from 36 senior high schools across nine districts. Data were collected through a 21-item closed-ended questionnaire and an observation guide. Descriptive statistics such as mean, standard deviation, and percentage were used to analyse the research question, while an independent samples t-test was used to test the hypothesis at a significance level of (α = 0.05). The results revealed that physics teachers in the Ashanti Region employ diverse formative assessment strategies to support students’ learning. These include clarifying learning objectives, providing timely feedback, using varied assessment tasks, and offering suggestions for improvement. However, peer and self-assessment practices were found to be infrequently implemented. Furthermore, the study established a statistically significant difference between more experienced teachers (those with at least five years of service) and less experienced teachers (serving less than five years), with the former employing diverse formative assessment strategies. The findings suggest that teaching experience enhances teachers’ ability to apply varied formative assessment approaches effectively. The recommendation for this study suggests that the Ghana Education Service should organize professional development programmes focused on formative assessment practices for less experienced teachers to strengthen their classroom assessment literacy and improve instructional quality. The study enhances the comprehension of subject-specific formative assessment practices and underscores the need for continuous professional learning to promote effective physics teaching and learning in senior high schools.

Effect of Practical Activities on Students? Skills, Understanding, and Performance in Physics Measurement

This study investigated the effect of practical activities on students? process skills, conceptual understanding, and academic performance in physics measurement. An action research design was employed involving a purposively selected sample of 49 Form Two students. Data were collected using observation checklists, questionnaires, and achievement tests, with reliability confirmed by a Cronbach?s alpha value of 0.960. The intervention consisted of structured practical activities conducted over three weeks. Quantitative data were analysed using descriptive statistics and paired-sample t-test, while qualitative responses were analysed thematically. Results indicated significant improvement in students? conceptual understanding and performance, with mean scores increasing from 13.6 to 29.7. The paired-sample t-test showed statistically significant differences (p < 0.05). The findings suggest that practical activities enhance students? engagement, process skills, and learning outcomes in physics measurement. The study recommends integrating structured practical activities into early physics instruction.

&lt;p&gt;Physics Teachers’ Attitudes Toward Colleagues and their Relationship with Physics Teaching in Ghanaian Senior High Schools&lt;/p&gt;

Physics Practical Performance Through Differentiated Instruction: Insight into Senior High School Physics Practical Instruction in Ghana

Recurring challenges in the physics practical performance of Ghanaian Senior High School (SHS) students, particularly in basic experiments like the simple pendulum, warrant fresh pedagogical approaches. Differentiated Instruction (DI), which tailors instruction to different learner needs, is a promising yet unexplored strategy in this context. This study aimed to establish the learning needs of selected SHS students in performing the simple pendulum experiment and pinpoint some DI strategies that enhance their practical performance. A quasi-experimental design was employed involving 160 Form 2 physics students (97 males and 63 females) drawn from two intact classes in two senior high schools in Ghana. A structured questionnaire manifested significant learning issues: 78.7% of the students lacked a clear conceptualisation of the relationship between pendulum length and period, with recording time (28.8%), graphing results (24.4%), and period calculation (23.8%) being primary issues. Furthermore, 53.1% felt uneasy with mathematical equations, and 79.4% lacked confidence to conduct the experiment individually. The experimental group (n=80) received a four-week DI intervention. Regression analysis of post-intervention data indicated five DI strategies that predicted improved performance: hands-on experimentation (β = 0.449, p &lt; .000), teacher modification of learning styles (β = 0.192, p = .018), decreased complexity of lessons (β = 0.175, p = .022), students feeling comfortable demonstrating knowledge via experiments (β = 0.157, p = .025), and offering choices for assignments (β = 0.177, p = .016). A Mann–Whitney U test revealed that the DI group achieved significantly higher post-test scores compared to the control group (U = 3193.50, Z = –0.023, p = .982), with a medium-to-large effect size (r = .41). The study concludes that senior high school students exhibit diverse learning needs in physics practicals, which can be effectively addressed through adaptable and flexible differentiated instructional approaches. It recommends integrating these evidence-based interventions into teacher education and curriculum design to improve physics practical performance.

The Impact of Junior Secondary Basic Science on Senior Secondary Physics Outcome in Rivers State, Nigeria

The study investigated the impact of Basic Education Certificate Education (BECE), considering Basic Science as a predictor of Senior Secondary Certificate Examination (SSCE) Physics performance in public secondary schools in Port Harcourt metropolis. The study employed both ex-post facto and correlational design. A sample of 593 students was employed for the study and purposive sampling technique was utilized to select the sample. The study was anchored on the Motivational Systems Theory of Academic Achievement. Three research questions and three corresponding hypotheses were tested at 0.05 level of significance. Data used for the study was collected directly from the examining bodies. The data obtained was analyzed using simple linear regression statistics. The findings of the study showed BECE Basic Science performance does not significantly predict SSCE Physics performance (R² = .001; β = 0.028, P &gt; 0.05), accounting for only 0.1% of the variance in students' Physics scores. Gender-based analysis indicated that female students' BECE Basic Science performance had no significant predictive effect on SSCE Physics (R² = .004; β = -0.064, P &gt; 0.05), explaining only 0.4% of the variance, while male students' BECE Basic Science scores also showed no significant prediction (R² = .005; β = 0.069, P &gt; 0.05), explaining 0.5% of the variance. Based on these findings, it was recommended that the Nigerian Educational Research and Development Council (NERDC) review the junior secondary Basic Science curriculum to incorporate more Physics-related content, ensuring early exposure to fundamental Physics concepts.

Factors Affecting Teaching and Learning of Physics in Ghanaian Senior High Schools: Study in the Greater Accra Region

This study aimed to examine the factors affecting the teaching and learning of Physics in Ghanaian Senior High Schools. Purposive and convenient sampling techniques were used to sample the teachers and students. The sample size for this study was 50 teachers and 300 students. Descriptive statistics, such as percentages, means, and standard deviations, were used to analyse the data. The findings revealed that demonstration and discussions to illustrate concepts/ phenomena, emphasising qualitative thinking and presentation of concepts, laying emphasis on mathematical presentation of concepts/students planning and doing their experiment, teacher demonstration of problem-solving on the whiteboard, and teaching and learning being teacher-centred are the main teaching approaches of physics in senior high schools. The main constraining factors of teaching and learning physics in senior high schools were inadequate professional physics teachers, inadequate laboratory equipment, students’ perception of physics, an inadequate number of physics teachers, and students finding physics too mathematical and challenging. With regards to the way forward, it was identified from the teachers’ responses that there should be better salaries and/or incentives for physics teachers, there should be more teacher professional development on physics practicals, and training of more graduate teachers must be encouraged and supported. The responses of the students indicated that appropriate authorities should provide adequate laboratory equipment, and there should be more training for physics teachers. The study concluded that due to the important nature of the subject, it is important for stakeholders in education to come together to find modern ways of teaching the subject and also address critical challenges such as inadequate laboratory equipment and professional development of teachers, among others.

Multiple Representations: An Approach to Teaching Selected Physics Topics

This study investigated the impact of using multiple representations in teaching selected physics topics, specifically sound and waves, to senior high school students in Ghana. An action-research design was employed with an intact class of 30 form two students purposively sampled. Various representational formats including visual, text, graph, diagrammatic, and mathematical representations were incorporated during lessons. The main data collection instruments were achievement tests and classroom observation over five lessons. Findings revealed that students demonstrated improved skills in diagrammatic, graphical, verbal, and mathematical representations, with a notable enhancement in their cognitive achievement on physics concepts relating to sound and waves. The intervention engaged students actively in classroom discourse, promoting higher motivation, interaction, and participation. Quantitative analysis showed significant gains in students' ability to correctly solve physics problems using multiple representations compared to pre-intervention results. The study concluded that employing multiple representations supports conceptual understanding and problem-solving skills, counteracting the limitations of traditional lecture-based teaching that often leads to rote memorization and low engagement. The use of diverse representations facilitated students' development of science process skills such as graph drawing and diagrammatic reasoning. Recommendations include integrating multiple representations consistently in physics curricula, encouraging collaborative learning, and providing teacher training on implementing these strategies. The findings underscore the pedagogical value of multiple representations and provide a basis for adopting similar approaches to improve science education outcomes in Ghana and beyond.

Technology integration in science classrooms: Empowering student teachers for improved physics teaching with simulations

This study employed a descriptive case study design to examine the integration of technology in science education, focusing on the professional development of student teachers in Ghana. Using the technological pedagogical and content knowledge (TPACK) framework as a theoretical lens, the study aimed to address the gaps in existing teacher education programs. Through a technology integration training workshop, the progress of four student teachers in developing their competencies for integrating technology into the teaching of high school physics using simulations was tracked and examined. Drawing on a combination of quantitative (survey) and qualitative data (focus group discussions, semi-structured interviews, observations, and lesson artefacts) sources, findings revealed that the student teachers improved their teaching with technology, which was evident in their developed TPACK, improved content knowledge and developed competencies in the exploration of Physics Education Technology simulation environments. These outcomes suggest a transformative shift in student teacher's teaching approaches, transitioning from a teacher-centered paradigm to a learner-centered one, particularly within the context of simulation environments. Despite initial challenges associated with insufficient content knowledge, establishment of relationships among physics content, teaching strategies and the identified affordances of the simulation environment as well as the shift from traditional to learner-centered approach, the study underscores the pivotal role played by the professional training arrangement implemented for the research.

An Application of Programmed Instruction to Laboratory Work in a Preliminary Physics Course

The physical sciences have received more than their fair share of attention from researchers in the field of educational technology. The new teaching aids and programmed instruction have been applied to both the theoretical and practical sides of all the major science subjects, but invariably these applications have concentrated on the communication of knowledge in the form of facts or procedures to the exclusion of the more subjective and attitudinal aspects of science training. This paper describes an experimental approach to the teaching of a practical physics course to the preliminary year students of a Ghanaian university. The whole course has been re‐orientated so that the practical work is approached in a somewhat unusual way in which particular emphasis is placed on ideas of accuracy. The student is led to develop an appreciation of the errors which occur in the taking of readings and in the calculation of results from those readings. The development of the course, in which extensive use is made of programmed instruction, is described and some of the problems involved in the programming of subjective material such as this are discussed. The results of pre‐ and post‐testing are presented, and gain scores are related to attitude scores as well as other achievement measures.