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Developing a pmri-based learning design for social arithmetic through online buying and selling contexts Oktalina, Dian; Widiawati; Lismareni, Neni
Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika Vol. 8 No. 3 (2025): Jurnal Absis
Publisher : Program Studi Pendidikan Matematika Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/absis.v8i3.3365

Abstract

Social arithmetic is closely related to students’ daily economic activities; however, many students experience difficulties in understanding its concepts due to the abstract presentation of learning materials. This study aimed to develop a Hypothetical Learning Trajectory (HLT) based on the Indonesian Realistic Mathematics Education (PMRI) approach by utilizing online buying and selling as a learning context. The study employed a design research methodology of the developmental research type within a qualitative framework. The research was conducted through three phases: preparing for the experiment, design experiment, and retrospective analysis. Participants were seventh-grade students at SMP Muhammadiyah Pagaralam during the 2024/2025 academic year. Data were collected through classroom observations, interviews, document analysis, and pre- and post-tests. The results indicate that the developed HLT effectively supports students in constructing a meaningful understanding of social arithmetic concepts, such as discounts, taxes, and final costs, through contextual and experiential learning activities. The PMRI-based learning design also encourages active student participation and supports the development of critical thinking skills. These findings suggest that the proposed learning trajectory can serve as a practical reference for designing context-based social arithmetic instruction.
A Validasi Model Numerik Spektrum Gelombang Menggunakan Data Wave Recorder Platform Minyak & Gas Lepas Pantai Adiansyah, Marta; Widiawati, Widiawati; Lismareni, Neni
Jurnal Pendidikan Matematika : Judika Education Vol. 9 No. 1 (2026): Jurnal Pendidikan Matematika: Judika Education
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/e2bhhr65

Abstract

This study aims to develop a learning product using GeoGebra Classroom on the topic of pyramids that is valid and practical for Grade VII students at SMP Muhammadiyah. The research method employed is Research and Development (R&D), adapting the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The results show that the developed product is considered valid with an overall score of 84%. Practicality was assessed through student response questionnaires, with results showing 78% in the one-to-one test, 96% in the small group test, and 82% in the field test. In conclusion, GeoGebra Classroom can be used as an effective learning medium to enhance students’ understanding, creativity, and construction skills. Keywords: Development, GeoGebra Classroom, Pyramids, Learning Media