Journal of Baltic Science Education

3

Authors: Editorial Board

Contents, JBSE, Vol. 20, No. 1, 2021

10-20

Authors: Michael Allan A. Bahtaji

5E instructional model is commonly utilized in science teaching to promote conceptual learning. However, the benefit of 5E instructional model cannot be fully attained if the knowledge and skills essential to learning were not properly established from past. Similarly, the development of new concepts cannot be fully attained if the important processes inculcated in the 5E model were not considered in teaching. In this research, the effects of 5E model instruction and previous learning experiences on the conceptual learning of students in Newtonian mechanics were evaluated. Using 2 x 2 factorial research design, the conceptual understanding of 172 undergraduate students was evaluated before and after the experiment. These participants were distributed into four groups with different programs. The result revealed that both 5E instructional model and previous learning experiences contributed to the conceptual learning of students in mechanics. Those students who received 5E instructional model and whose exposure to science and math courses is high, gained the highest increase in the mean score after the experiment. This suggests that the effectiveness of 5E instructional model can be fully achieved if the knowledge and skills essential to learning and conceptual change were properly established from previous learning experiences and activities.

38-49

Authors: Mustafa Fidan, Meric Tuncel

Physics subjects or topics as a part of science education enable students to explore nature and natural events by using physics laws and scientific methods. In the lower-secondary school, physics is a subfield within the science curriculum developed holistically with the broad field curriculum design unlike the subject-centred curriculum in the upper-secondary education. As an important factor that directs the achievement, self-efficacy is one of the predecessors of these cognitive and affective skills. Accordingly, most of the scales which evaluate the students’ cognitive or affective skills in the lower-secondary school are related to science course in a general context. This research aimed to develop a valid and reliable scale measuring the students’ self-efficacy beliefs toward physics subjects for lower-secondary schools. The sample consists of 2737 students. The draft scale consisted of 52 items and was applied to 1882 students in the first stage. To construct validity of the scale, exploratory factor analysis was performed. The results showed that the scale consisted of single- factor with 28 items. To confirm its factor structure, the scale was applied to 785 students. The research findings indicate that the scale is a valid and reliable instrument to measure the self-efficacy beliefs towards physics subjects.

67-79

Authors: Insun Lee, Jongwon Park

Teachers’ and parents’ perceptions of scientific creativity are assumed to be an important environmental factor for scientific creativity, so this research surveyed their perceptions of the behavioral characteristics of scientific creativity and compared their perceptions to those of students. This is achieved with a list of behavioral characteristics of creative physicists during their growth period. For this survey, 48 science teachers, 112 parents, and 145 science gifted students participated. Out of the 30 items of the list, they selected 10 items that were considered important indicators to become creative scientists in the future, and they ranked them according to their importance. The results showed that the three groups all perceived ‘conducting experiments, asking questions, thinking logically to solve difficult problems, and sharing ideas’ as important for scientific creativity. For the items that were perceived to be less important, it was discussed why these items might be necessary for scientific creativity. Comparative result showed that parents gave more importance to learning-related aspects, teachers to thinking-related aspects, and students to activities such as making and experimenting. This research showed the behavioral characteristics that should be encouraged to improve students’ scientific creativity at school and at home.

93-107

Authors: Maxwell Jnr Opoku, Angela James

In Africa, Science education curricula have been instrumental in promoting Western worldviews as being universal. An educational transformation and decolonisation of the school curriculum is required. A focus on an African worldview and an integration of the local context and community-based information is necessary for survival, i.e., Indigenous Knowledge System (IKS). While IKS is enshrined in the schooling curriculum, Educators experience challenges with implementing it, because the pedagogical strategies have not been clearly described. An in-depth qualitative study was conducted with the Indigenous Knowledge (IK) holders of the Zulu cultural group and Senior High School (SHS) Science teachers to explore how IK on environmental sustainability could be taught in South African science classrooms. The research employed an interpretivist, multi-site ethnographic, qualitative approach, and naturalistic research style. In-depth interviews were used to generate data from the purposively selected community persons. The thematically analysed findings were used to develop a culturally specific pedagogical model on how to teach IK in science classrooms: touring cultural places; demystifying indigenous practices and perception; utilizing indigenous pedagogies; teaching wisdom behind indigenous practices etc. The research recommends that future studies be conducted on applying the model in different geographical and cultural schooling contexts.

119-133

Authors: Moonika Teppo, Regina Soobard, Miia Rannikmäe

Student perceptions of science teaching could be expected to differ in grade 6 compared with teaching in grade 9, as could student interest in science learning. To compare Estonian grades 6 and 9, lower secondary school student and science teacher perceptions of teaching/learning approaches as well as student perceived interests/enjoyment on science learning, an instrument was developed taken into account 18 different teaching approaches that could take place in science lessons. An analytical, exploratory structural equation modelling (ESEM) approach supported 4-factor models differentiating between teacher-centred and constructivist approaches for both teachers and students, each having acceptable model fits. Based on outcomes, a regression model was developed associating student interest to learn science with the frequency of teaching and learning approaches explored. Results indicated that approaches associated with teacher-centred approaches were those most frequently undertaken in science classes when compared with those seen as social constructivist and student-centred, both among science teachers and students. Regression analysis showed that there was a relationship between student interest/enjoyment towards science subjects and the frequency, in which different teaching and learning approaches took place in the classroom.

146-159

Authors: Shao-Na Zhou, Qiao-Yi Liu, Kathleen Koenig, Qiu-ye Li，Yang Xiao, Lei Bao

The Lawson’s Classroom Test of Scientific Reasoning (LCTSR) is a popular instrument that measures the development of students’ scientific reasoning skills. The instrument has a two-tier question design, which has led to multiple ways of scoring and interpretation. In this research, a method of pattern analysis was proposed and applied to analyze two-tier item pairs on the subskill of Control-of-Variable (COV) of LCTSR. The data were collected from students in grade 4 through college in both the United States and China. Students’ response patterns to two combined item pairs were analyzed and compared against students at different grade levels and reasoning development levels. Six performance levels were established based on students’ response patterns, serving as indicators of COV reasoning development levels. With the new method, a relation was obtained between students’ level of COV skills and grade level, as well as their level of overall reasoning development. It can provide useful information on the possible developmental levels of students’ reasoning skills.