Critical Thinking Skills in STEM Integrated PJBL Learning with Biotechnology Material Class XII IPA SMAN 5 Surakarta TA 2023/2024

Abstract

Education has an important role in preparing quality human resources. Therefore, one suitable learning model to apply is PjBL. STEM is an approach that combines four disciplines in learning related to solving real-life problems. The STEM-integrated PjBL model aims to improve students' critical thinking skills. Critical thinking skills are one of the skills that students must possess in the 21st century. The purpose of this study is to determine the critical thinking skills of grade XII IPA students of SMAN 5 Surakarta TA 2023/2024 on biotechnology materials using a STEM-integrated PjBL approach. The research method uses quasi-experiments. This critical thinking skill is measured through posttest questions with cognitive C4-C6. The results showed that from the results of the t-test it was known that the sig (2-tailed) value was 0.000 < 0.005 so it could be concluded that the STEM-integrated PjBL approach was able to improve the critical thinking skills of grade XII IPA students of SMAN 5 Surakarta biotechnology material TA 2023/2024. Based on the T-test curve of critical thinking skills, it is known that H0 is rejected because the calculated t value is greater than the table t, which is 7.566 > 1.99714 so that the STEM-integrated PjBL approach can improve the critical thinking skills of grade XII IPA students of SMAN 5 Surakarta biotechnology material TA 2023/2024. So it can be concluded that the PjBL-STEM learning model can improve students' critical thinking skills with an average score of 87,15 %.