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All Journal Jurnal Pemberdayaan Masyarakat
Ibnu Khaldun
Department of Chemistry Education, Faculty of Teacher Training and Education, Universitas Syiah Kuala, Indonesia
Social Sciences

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Innovative STEM-Excel Integration to Foster Students' Mathematical Representation Skills ? Zulfadli Zulfadli; Evendi Evendi; Ibnu Khaldun; Taufik Taufik; Putri Nabilah
Jurnal Pemberdayaan Masyarakat Vol 5, No 2 (2026): Article in Press
Publisher : Yayasan Keluarga Guru Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46843/jpm.v5i2.767

Abstract

Mathematical representation ability (MRA) is essential to mathematics learning, yet many high school students struggle with topics such as quadratic equations and functions. This study aims to develop and evaluate an Excel spreadsheet–based learning media integrated with a STEM (Science, Technology, Engineering, Mathematics) approach to enhance students' MRA. Using the Research and Development (RD) method with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), the media was tested on 32 tenth-grade students at SMA Negeri 1 Samalanga. Data were collected through expert validation, teacher and student questionnaires, and pretest-posttest MRA instruments. The results showed that the media achieved high validity (89.25%), was rated very practical by teachers (83.2%) and students (87.3%), and significantly improved students' MRA, with an N-Gain score of 0.75 (high category). Thus, the Excel-STEM learning media is valid, practical, and effective in improving students' mathematical representation skills. This study contributes to the field of educational technology by offering a low-cost, accessible, and pedagogically sound digital tool that integrates STEM principles into mathematics instruction, supporting the development of representational fluency in secondary education.
Development of a Microsoft Excel-Based Management System for Secondary School Chemistry Laboratories Puan Purnama Wati; Ibnu Khaldun; Sri Winarni; Muhammad Nazar; Zulfadli Zulfadli; Putri Nabilah
Jurnal Pemberdayaan Masyarakat Vol 4, No 4 (2025)
Publisher : Yayasan Keluarga Guru Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46843/jpm.v4i4.547

Abstract

Inefficient digital systems for managing chemistry laboratories in secondary schools often impede effective record-keeping, inventory management, and practicum reporting. This study developed Chemlab Excel, a practical and accessible offline Microsoft Excel-based laboratory management system, eliminating the need for an internet connection or additional software. Employing a Research and Development (RD) approach with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation), and involved nine purposively selected respondents, including chemistry teachers, laboratory heads, and lab assistants from SMA Negeri 1 Bireuen and SMA Negeri 1 Samalanga. The study utilized expert validation sheets, teacher response questionnaires, and the System Usability Scale (SUS) for data collection. Validity was assessed using Aiken's V, and inter-rater reliability was measured via the Intraclass Correlation Coefficient (ICC). Three experts validated the system, with trials conducted in two secondary schools in Bireuen Regency. Results showed high feasibility, with Aiken's V coefficients of 0.852 (media) and 0.869 (material), and ICC values of 0.768 (media) and 0.761 (material), indicating good reliability. The SUS score averaged 72.22%, and teacher responses reached 94.64%, reflecting user-friendliness and enhanced efficiency. Chemlab Excel proves to be a feasible, contextually relevant solution for laboratory management, contributing to streamlined administrative processes in science education and offering a scalable, accessible tool for secondary schools.
Co-Authors Evendi Evendi Muhammad Nazar Puan Purnama Wati Putri Nabilah Sri Winarni Taufik Taufik Zulfadli Zulfadli Zulfadli Zulfadli