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All Journal Jurnal Absis : Jurnal Pendidikan Matematika dan Matematika
Susda Heleni
Universitas Riau, Indonesia
Mathematics

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Development of pythagorean theorem worksheets based on realistic mathematics education to facilitate students' mathematical reasoning ability Maya Aulia Putri; Elfis Suanto; Susda Heleni
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.4129

Abstract

This study was motivated by students’ low mathematical reasoning ability, particularly in the geometry topic of the Pythagorean theorem. The 2022 PISA results also indicate that Indonesian students’ mathematical performance remains relatively low, partly due to learning practices that emphasize memorization and provide limited non-routine problems that support reasoning. Therefore, this study aimed to develop Pythagorean theorem worksheets based on Realistic Mathematics Education (RME) to facilitate students’ mathematical reasoning ability. This research employed a Research and Development (R&D) design using the 4-D development model, consisting of define, design, develop, and disseminate stages. The product was developed for eighth-grade students and was validated by three expert validators. Product trials were conducted through one-to-one evaluation involving three students, a small group trial involving six students, and a field trial involving 34 students at SMPN 8 Pekanbaru. The instruments used were validation sheets and student practicality questionnaires. The results showed that the developed worksheets obtained an average validation score of 4.40, categorized as very valid. The practicality test obtained an average score of 3.48 in the small group trial and 3.48 in the field trial, both categorized as very practical. These findings indicate that the RME-based Pythagorean theorem worksheets are valid and practical for use as teaching materials to facilitate students’ mathematical reasoning ability.
Development of a problem-based learning teaching module to facilitate students' mathematical communication ability Ipu Anandari Silsiamar; Putri Yuanita; Susda Heleni
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 9 No. 1 (2026): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v9i1.4125

Abstract

Mathematical communication ability is one of the important abilities in mathematics learning because it enables students to express mathematical ideas, represent contextual problems into mathematical models, use appropriate mathematical symbols, and write conclusions from problem-solving. However, students’ mathematical communication ability remains relatively low, especially in solving contextual problems related to statistics. This study aimed to develop a Problem-Based Learning teaching module on measures of central tendency and data dispersion that is valid and practical for facilitating students’ mathematical communication ability. This research used a Research and Development approach with the 4D model, consisting of define, design, develop, and disseminate stages. The teaching module and its supplementary student worksheets were validated by three experts and evaluated through one-on-one evaluation, small group trial, and large group trial at SMP Negeri 3 Mandau. The validation results showed that the teaching module obtained an average score of 3.65 and was categorized as very valid, while the student worksheets obtained an average score of 3.61 and were also categorized as very valid. The practicality results showed that the student worksheets obtained an average score of 3.52 in the small group trial and 3.53 in the large group trial, both categorized as very practical. These findings indicate that the developed teaching module meets the criteria of validity and practicality and can be used as a learning resource to facilitate students’ mathematical communication ability.
Co-Authors Elfis Suanto Ipu Anandari Silsiamar Maya Aulia Putri Putri Yuanita