Implementing Student Teams Achievement Divisions (STAD) learning model in grade 9 Biology and its impact on learning achievement

Sherab Chophel, Pema Tshewang, Phuntsho Wangdi, Ugyen Wangdi, Sherab Jamtsho
Corresponding email: [email protected]

A B S T R A C T

The purpose of this action research (AR) is to implement the Student Team Achievement Divisions (STAD) learning model as a classroom teaching and learning practice and determine its impact on the learning achievement of grade 9th biology students in one Bhutanese higher secondary school. The study employed a pre-test and post-test one-group quasi-experimental group design as a methodological approach. A total of 31 grade 9 students were purposively selected as the experimental group and received the STAD learning model treatment as an intervention for a month. The group was tasked with STAD learning activities such as drawing and writing activities, quizzes, presentations, group discussions, tests, questions, and answers. The data were collected quantitatively through pre- and post-Biology Achievement Tests (BAT), questionnaires, and qualitatively through focused group interviews. Quantitative data are presented in descriptive statistics (mean and standard deviation) while qualitative data is in thematic analysis. According to the paired sample t test, the post-test mean score (M=10.98, SD=2.53) increased significantly when compared to the pre-test mean score (M=6.67, SD=2.79), with mean score differences (M=4.30). A descriptive analysis of questionnaires on students’ motivation, collaboration, and self-confidence in learning reveals a ‘High’ degree of perceptions on mean scores and standard deviations; (M=3.99, SD=0.715); (M=4.24, SD=.729); and (M=3.89, SD=0.948) respectively. Qualitative data also indicated positive perceptions of the use of the STAD learning model in biology. Therefore, based on the findings, it is recommended that teachers adopt the STAD model in their classrooms to motivate students and improve their learning achievement.

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Rectifying misconceptions on covalent bonding using cooperative learning, concrete models, and computer simulation: A case study

Phuntsho Dorji, Yonten Chophel
Drukjegang Higher Secondary School, Bhutan
Daga Central School, Dagana, Bhutan
Corresponding Email: [email protected]

A B S T R A C T
The covalent bonding concept is perceived by students as abstract to comprehend and thus leads to the development of misconceptions. The inappropriate preconception on the subject is one of the contributing factors that lead to the development of misconceptions among the students. To this end, identifying and remediating learners’ misconceptions is vital for every individual teacher in order to cultivate sound scientific knowledge in their learners. This study aimed to explore two aspects: first, the misconceptions of the grade-ninth students on the covalent bonding concept. Second, the effectiveness of cooperative learning based on conceptual change instruction, the use of concrete models, and computer simulation in remediating those misconceptions. The study adopted a quantitative method. The sample comprised 20 students (n=20) studying in the ninth grade of Drukjegang Higher Secondary School in Bhutan. The misconceptions of the students were identified using two-tier diagnostic tests. The study revealed that students’ common misconceptions related to covalent bonding are concentrated under five themes: the kinds of atoms that form covalent bonding, how covalent bonding is formed, the kinds of covalent bonding, the characteristics of covalent compounds, and the Lewis dot structure and the octet rule. The data collected from the pre-test and post-test were analyzed and compared to determine the effectiveness of the intervention strategies. The misconceptions of students in post-test have significantly reduced after the intervention was implemented. The study suggests the use of cooperative learning, concrete models, and computer simulation as an effective remediating means of delivering the concept of covalent bonding among the students. Implications of the findings are also discussed.

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