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All Journal Edumatsains JME (Journal of Mathematics Education)
Aprilia Nurul Chasanah
Tidar University
Agriculture, Biological Sciences & Forestry Chemistry Education Mathematics Physics

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The Effect of Realistic Mathematics Education (RME) Learning based STEM Activity on Students' Mathematical Representation Abilities Nadia Alfiana Rosyada Al Hasani; Dita Aldila Krisma; Aprilia Nurul Chasanah
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 11 No 1 (2026): July
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v11i1.8382

Abstract

The low ability of students to transform mathematical problems into verbal, visual, or symbolic representations approached that teacher centered learning and the lack of linking the material to real contexts. This research investigates how Realistic Mathematics Education (RME) integrated with STEM activities influences students' ability to represent mathematical concepts. This research adopted a quantitative approach with a quasi-experimental pretest-posttest control group design to evaluate the effectiveness of the implemented learning approach. The sampling of participants was carried out through cluster random sampling. The instrument employed for data collection comprised interview guides, observation sheets, validation forms, and test items designed to measure students' mathematical representation ability. Data collection was carried out through observation, interviews, and mathematical representation ability tests. Data were analyzed using normality tests, homogeneity tests, independent sample t-tests, paired sample t-tests, N-gain scores, and Cohen d effect size. The results follow that RME learning based on STEM activities in the experimental group was better with a high N-gain score (0.73) compared to the control class with a medium N-gain score (0.54). The Cohen's d effect size analysis yielded a value of 1.43, falling into the "very large" category. These results confirm that RME instruction combined with STEM activities successfully enhances students' mathematical representation ability.
Development of A Scratch-Assisted PBL-Based E-LKPD to Improve Junior High School Students’ Computational Thinking Skills in Algebra Marisa Qonita; Aprilia Nurul Chasanah; Yesi Franita
JME (Journal of Mathematics Education) Vol 11, No 2 (2026): JME (Jul - Dec)
Publisher : Universitas Sembilanbelas November Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31327/jme.v11i2.2864

Abstract

This research focuses on creating an electronic student worksheet (E-LKPD) centered around Problem-Based Learning (PBL) through Scratch, aimed at improving students' computational thinking abilities in algebra at Ngadirejo Islamic Junior High School, located in Temanggung Regency. A Research and Development (RandD) method is utilized, following the ADDIE framework (Analysis, Design, Development, Implementation, Evaluation). The subjects of this research were the seventh-grade students in class VII H, and surveys served as the primary data collection tool. Validation outcomes show that the E-LKPD learning material received an average score of 86. 3%, categorizing it as "valid. " Student and teacher feedback also highlighted the E-LKPD's practicality, reflected in a score of 83. 47%. The integration of this resource into mathematics teaching significantly boosted students' computational thinking skills. The average scores climbed from 34. 97 before application to 68. 32 afterward, resulting in an N-gain score of 0. 5342, which is rated as "medium. " Therefore, it can be concluded that the E-LKPD is valid, practical, and effective in enhancing the computational thinking skills of students.
Co-Authors Dita Aldila Krisma Marisa Qonita Nadia Alfiana Rosyada Al Hasani Yesi Franita