The Effectiveness of Predict-Explain-Observe-Discuss-Explain (PEODE) Based Laboratory Work Activities on Pre-Service Science Teachers’ Science Process Skills

Abstract

This research aims at investigating the effectiveness of the Predict-Explain-Observe-Discuss-Explain (PEODE) based laboratory work activities on pre-service science teachers’ science process skills. A quasi-experimental research model with pre- and post-test via control group was employed in the research. The semi-experimental study was based on 46 pre-service science teachers enrolled in the primary Science Education Program a state university. In the research, randomly selected two groups were used, one experimental group (EG; n = 22) and one control group (CG; n = 24). While the control group participated in traditional laboratory activities work, the experimental group took part in the PEODE-based laboratory work activities. Laboratory activities were carried out in both groups for a total of 9 weeks, two hours a week. Science process skills test (SPST) measuring five different scientific process skills were presented to them as pre- and post-test in order to assess pre-service science teachers’ science process skills. The test scores were analyzed quantitatively with a statistical analysis program. At the end of the research, while there was no significant differences total score of the SPST, significant statistical differences were found between the experimental and control groups in "Making Operational Comments" and "Designing the Research" sub-skills.

Enhancing pupils’ understanding via discussion based POE method

“…In SMCT Scoring, the criteria and scores included in a previous research conducted by Coştu (2021) were used. Since the SMCT consists of two phases, second phase need to be analysed in order to evaluate which category is appropriate for given answer.…”

“…This result also supports the findings of previous similar studies. Such as; Coştu (2021) stated that POE-DE supported laboratory studies are effective in increasing pre-service teachers' academic achievement, scientific process skills, conceptual understanding and interpretation of daily life problems. Wulandari et al (2017) found that students can develop their critical thinking skills effectively by using the discussionenriched POE method.…”

“…In order to better understand the subject explained to the students, there are many studies that have added the "discussion" section to the POE activities (Samsudin et al, 2021;Alabdulaziz, 2022 (Coştu, 2021).…”