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PENGEMBANGAN PERANGKAT PEMBELAJARAN STEAM PROJECT BASED LEARNING UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS DAN ARGUMENTASI MATEMATIS SISWA Emas Marlina; Dini Andiani
Jurnal Kependidikan : Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran, dan Pembelajaran Vol. 12 No. 1 (2026): March
Publisher : LPPM Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jk.v12i1.19728

Abstract

This study aims to develop a valid, practical, and effective STEAM Project-Based Learning (PjBL) instructional device to improve junior high school students’ critical thinking and mathematical argumentation skills. The study employed a Research and Development (R&D) method using the Dick and Carey instructional design model, which consists of nine systematic stages. The participants were eighth-grade students in Bandung Regency. The instruments included expert validation sheets to assess validity, teacher and student response questionnaires to evaluate practicality, and pre-test and post-test instruments to measure effectiveness. The product was validated by two experts in media and subject matter. Practicality was determined based on teacher and student responses, while effectiveness was measured using the N-gain score. The results indicated that the developed instructional device was highly valid and feasible for implementation. The material expert validation achieved an average score of 96.48%, and the media expert validation reached 95.25%, both categorized as very high. The practicality test showed very positive responses, with teacher responses averaging 95% and student responses 93%. Furthermore, the effectiveness test demonstrated high N-gain scores of 0.75 for mathematical critical thinking and 0.77 for mathematical argumentation skills, indicating significant improvement in both competencies.
Development of a PRODELIC-Based Instrument for Assessing Students’ Mathematical Literacy and Disposition Emas Marlina; Hartono; Wahyu Setyaningrum
Jurnal Kependidikan : Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran, dan Pembelajaran Vol. 12 No. 3 (2026): September
Publisher : LPPM Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jk.v12i3.20934

Abstract

This study aims to develop and validate a PRODELIC-based instrument for assessing students’ mathematical literacy and mathematical disposition, ensuring that the instrument demonstrates adequate validity and is suitable for evaluating these competencies in mathematics learning. This research method uses Design-Based Research (DBR) which consists of problem analysis, design and innovation development, cyclical repetition and implementation, and reflection evaluation. The research instrument is a validity instrument consisting of a validity assessment sheet for the PRODELIC learning model components and learning support tools. The data analysis used is qualitative and quantitative. The validity of the model, lesson plans, and worksheets was evaluated based on the assessment of experts and practitioners using the Aiken validity index. The results of the study showed that the Aiken's V value for all learning model component instrument items was in the range of 0.85 to 0.95, the lesson plan instrument was in the range of 0.9 to 0.95, and the worksheet was in the range to 1. These scores means that the model is valid and suitable for developing mathematical literacy and disposition. These findings indicate that the PRODELIC model and its supporting instruments are valid and suitable for mathematics learning aimed at developing students’ mathematical literacy and disposition. Theoretically, PRODELIC contributes an integrated framework that combines Deeper Learning and Project-Based Learning, while practically, it provides teachers with a structured approach for designing mathematics instruction that promotes mathematical literacy and disposition.