Scientific Reasoning Ability on the learning unit of heat energy of Grade-7 Students Learning Through PSOE

Abstract

The objective of this research is to study scientific reasoning ability on the learning unit of heat energy among grade-7 students engaged through PSOE approach. The sample for this research were 30 grade-7 students of Lampang Kanlayanee School, Muang District, Lampang Province. This research was carried out in the second semester of academic year 2019. The research instruments were 1) a total of 5 lesson PSOE-based teaching plans (OIC > 0.67) and 2) a scientific reasoning ability test (0.2 < p < 0.8, r > 0.2, KR-20 = 0.88). The result indicates that the average scientific reasoning ability post score is significantly higher than the average pre score (paired t-test, p < 0.05). Considering the components of scientific reasoning, including claim, evidence and justification of the claim and evidence, the result reveals that only 20 percent of students made a claim based on evidence and could justify how the claim and the evidence are related. When Considering the teaching content, it was found that students can do the best scientific reasoning’s score on the topic of heat transfer.