Pengembangan E-Modul Berbasis STEM untuk Meningkatkan Hasil Belajar Siswa Kelas XI SMA pada Materi Koloid

Abstract

This study was motivated by students' low learning outcomes regarding the topic of colloids, instruction that tended to be teacher-centered, and the lack of digital teaching materials integrating the Science, Technology, Engineering, and Mathematics (STEM) approach. To address these issues, this study developed a STEM-based e-module in a flipbook-assisted digital format, designed to link colloid concepts with contextual problems, thereby supporting more interactive and meaningful learning. The study aimed to determine the e-module's feasibility, student responses, and the improvement in learning outcomes following its use. A Research and Development (R&D) method was employed using the 4D model (Define, Design, Develop, and Disseminate). Trials were conducted with Grade XI students at SMA Negeri 1 Tanjung Morawa. Data collection involved validation by subject matter and media experts, student response questionnaires, and learning outcome tests. The e-module's effectiveness was tested using a one-group pretest-posttest design, with learning outcome improvements analyzed via N-Gain scores. The results indicate that the developed STEM-based e-module met the "highly feasible" criteria, based on expert ratings of 83.21% from subject matter experts and 87.16% from media experts. The e-module also elicited a very positive response from students, with an average score of 87.51%. Implementation of the e-module improved student learning outcomes, evidenced by an increase in the average score from 45.28 (pre-test) to 79.72 (post-test), with an N-Gain score of 0.63, falling into the "medium" category. These findings demonstrate that the developed STEM-based e-module is not only suitable as digital teaching material but is also effective in enhancing student learning outcomes regarding colloids through contextual, student-centered learning.