Zuliyanti Zuliyanti, Ilham Rizkianto
The efforts to enhance student's mathematical justification skill can be done through a learning process by providing realistic problems that promote a maningful learning and involving real activity in guided discovery process that can give students opportunities to explain and justify their answer. One of learning approach that can facilitate these activities is realistic mathematics education approach. This developmental research aims to produce mathematics learning material that includes lesson plans and student worksheets with realistic mathematics education learning approach to enhance mathematical justification skill on linear programming material. This research also aims to know the quality of learning material in the aspect of validity, practicality, and effectiveness. Type of this research was research and development with ADDIE model, consisting of Analysis, Design, Development, Implementation, and Evaluation. The object of this research was learning materials with realistic mathematics education learning approach to enhance mathematical justification skill on linear programming material. The instruments used in this research were validation sheets for measuring the validity for the learning material, student questionnaire for measuring the practicality, and mathematical justification skill test for measuring the effectiveness of the learning material. The result of this study learning materials with realistic mathematics education learning approach fulfilled the validity, practicality, and effectiveness criteria to enhance mathematical justification skill. © 2022 Author(s).
Mathematics Education Departement, Faculty of Mathematics and Science Education, Yogyakarta State University, Yogyakarta, Indonesia
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