The Influence of Multirepresentation Based Science Student Worksheets Integrated with Virtual Laboratory on the Critical Thinking Skills of Junior High School Students

Abstract

This study aims to examine the effect and increase in the use of multirepresentation-based science worksheets integrated with virtual laboratories on the critical thinking skills of junior high school students. The research method used is a quasi-experiment with a non-equivalent control group design. The research subjects consisted of 54 seventh-grade students at SMP Negeri 14 Jember in the odd semester of the 2025/2026 academic year, who were divided into an experimental class and a control class. Data collection techniques were carried out through pretest and posttest administration, while data analysis included normality tests, independent samples t-tests, and n-gain tests to determine the improvement in students' critical thinking skills. The results showed that the use of multirepresentation-based science worksheets integrated with virtual laboratories had a significant effect on improving students' critical thinking skills.