Pengaruh Model Problem Based Learning (PBL) Melalui Lesson Study Terhadap Kemampuan Berpikir Kritis Siswa

Abstract

This study aimed at detemining the effect of Problem Based Learning Model on the ability of students’ critical thinking through lesson on the topic of effort and energy. The method of research was an experimental research by using post-test-one control group design. Experimental class was treated by problem based learning, while the control class was taught by conventional learning through lesson study. Population of this research was the high school at Al Hamzar, Tembeng Putik of the X grade which consisted of two classes. Those were X Mathematics and natural science 1 and X Mathematics and Natural Science 2 with the total number or students was 58. The sampling thechnique applied was saturated sampling technique. Then, the instrument used in the present research was essay test which contained 6 items. The test arrangement followed the indicators of critical thinking with a variety of possible answers. Having implemented both in the experimental and in the control class, there were improvements in learning process in tems of managing the time, the students and doing aperception. Testing hyphoteshis result by uisng t-test showed t-test = 1. 25 and t-table in signifance level was 5% was 0. 07, so t-test> t-table which meant the alternative hyphothesis (Ha) was accepted and null hyphothesis (Ho) was rejected , it could be concluded that problem based learning thorugh lesson study was significantly effective in students’ critical ability on the topic of effort and energy for the tenth garade students at Al Hamzar high school.