Improving students' critical thinking skills through natural science learning website

Abstract

This study aims to determine the improvement of students' critical thinking skills through a natural science learning website. The subject of the pre-experimental study is 64 junior high school students of grade 7th that is divided into two classes (32 students in the class D, Grade 7th, as experiment class and 32 students in class B, Grade 7th, as a control class). This study is placed at the 4th Pakem State Junior High School-Yogyakarta. Sampling technique that is used in this study is purposive sampling. The data was collected by using pre-test and post-test. The data was analysed by using paired t-test and N-gain score to see the effectiveness of the natural science learning websites to increase the students' critical thinking skills. The results which are showed by using the natural science learning website has a significant effect on students' critical thinking skills with the value of significant (α) 0.00 < 0.05 while the N-gain score is 0,87 that is included in the medium category. It can be concluded that natural science learning websites can increase students' critical thinking skills.