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All Journal STEM Education International
Fifi Suaidatur Rofik
Universitas Negeri Malang
Education Environmental Science Mathematics

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Student Worksheet of Light and Optics for STEM-Based Problem-Based Learning: Critical Thinking Skills Perspective Fifi Suaidatur Rofik; Habiddin Habiddin; Muhammad Fajar Marsuki
STEM Education International Vol. 1 No. 1 (2025): STEM Education International
Publisher : PT Ahan Group Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71289/61kdc115

Abstract

This study investigates the effectiveness of student worksheets in an integrated Problem-Based Learning model using the STEM approach on light and optical materials towards improving the critical thinking skills of eighth-grade students of SMPN 1 Kepanjen. Student worksheets were developed using the 4D model of Thiagarajan (1974). This study was a pre-experimental design using a one-group pretest-posttest. The research instruments were critical thinking ability tests and questionnaires. The paired sample t-test results showed a significant difference in students' critical thinking skills before and after learning on the STEM-based Problem-Based Learning student worksheet. Supported by an N-Gain score of 48.14%, the developed students' worksheet effectively improves students' critical thinking skills.
Co-Authors Habiddin Muhammad Fajar Marsuki