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Abstract
This study was motivated by the low level of mathematical communication skills among junior high school students, as reflected in Indonesia’s PISA 2022 results, particularly in expressing mathematical ideas and reasoning in written form. The aim of this research was to develop problem designs on rational number material oriented toward improving students’ mathematical communication skills. The research method employed was Research and Development (R&D) using the ADDIE model, limited to the Development stage. The stages included analyzing students’ characteristics and learning needs, formulating learning objectives and indicators of mathematical communication, and developing four initial contextual problem designs. The results of the study were four prototype problems based on real-world contexts: time management, financial literacy, temperature change, and cooking activities, which required students to represent data, perform mathematical calculations, and interpret results logically. The developed problems served as an initial design that had not yet been validated or implemented, thus requiring further research through implementation and evaluation stages to assess their effectiveness in enhancing students’ mathematical communication skills in junior high school.
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References
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