Upaya Meningkatkan Kemampuan Berpikir Kritis Kimia Siswa Melalui Model Pembelajaran Think Pair Share (TPS) di SMA Negeri 2 Padangsidimpuan

Abstract

The problem in this study was the low level of students' critical thinking skills in chemistry and chemistry learning activities of students in the class X-2 of SMA Negeri 2 Padangsidimpuan. To correct this problem, in this study applied the Think Pair Share (TPS) Learning model. The aim of the study was to improve students 'critical thinking skills on the subject of Redox Reaction, to improve students' chemical learning activities and teacher chemistry learning performance. The type of research used is Classroom Action Research, using two learning cycles. The subject of this study was class X-2 of SMA Negeri 2 Padangsidimpuan with 26 total of students that consisting of 12 men and 14 women. And the object in this study was students 'critical thinking skills and observations of students' activities on the redox reaction material through the application of Think Pair Share (TPS) Learning Model in class X2 of SMA Negeri 2 Padangsidimpuan. From the data analysis, it shows that the evaluation results for the students' critical thinking ability test in the first cycle obtained a percentage of completeness of 50% and for the second cycle the percentage of completeness was 84.61%. The results of observations of student activities in the first cycle obtained a percentage of completeness of 61% and 83% in the second cycle. And observations on the ability of teachers to manage learning in the first cycle of 70% and in the second cycle increased to 91%. Based on the results of these studies it can be concluded that there is an increase in students' critical thinking skills on the subject of the redox reaction with the application of the Think Pair Share (TPS) Learning model in class X-2 of SMA Negeri 2 Padangsidimpuan