Faiz Hasyim, Tjipto Prastowo, Budi Jatmiko
Covid-19 spurs teachers to carry out online learning. This study aims to describe the improvement of students’ critical thinking skills through online learning assisted by Android-based PhET Simulation. This research is a Quasi Experiment using one group pre-test and post-test design which involves 27 students from VIII class who take science program in MTs Alif Laam Miim Surabaya (the level of education or school which is the same as Junior High School), Indonesia. The research instrument used in this study is a critical thinking skill test. Before and after the learning activities, the students were given a pre-test and post-test. The data collection is analyzed using descriptive quantitative research. The Results of the study show that there is an increase in the students’ critical thinking skills which is statistically significant with average of N-gain for about .57, categorized as medium. The highest N-gain is achieved in the indicator “interpretation”, which is for about .83 and categorized as high. While for the lowest comes from the indicator “analysis”, which is equal to .39, categorized as medium. It can be concluded that online science learning assisted by PhET Simulation can improve the critical thinking skills of students in MTs. © 2020. All Rights Reserved.
Universitas Negeri Surabaya, Surabaya, Indonesia; STKIP Al Hikmah Surabaya, Surabaya, Indonesia
