Learning of sets using Indonesian realistic mathematics education Available to Purchase

The set is essential for students to learn and master because it influences other mathematical materials and applications in daily life. However, many students still have difficulties studying the set, such as understanding the material. Therefore, it is necessary to design learning with the right approach and context. Design research from Gravemeijer & Cobb is used with three main stages: preliminary design, experimental design (pilot experiments and teaching experiments), and retrospective analysis. The subjects in this study were 7^th-grade students in one of the Junior High Schools in Semarang. This study produces a learning trajectory using the Sedekah Laut context for set material based on Indonesia Realistic Mathematics Education. The resulting learning trajectory consists of a series of 4 activities: contextual video observations to find the concept of sets, not sets, empty sets, universal sets, and Venn diagrams, explain the properties of the set, define sets operations, and solve problems related to sets. This article explained in detail the learning trajectory of the set with the context of the sedekah laut tradition at the pilot experiment stage. This study shows that using local wisdom-based context can help students understand sets and can be an inspiration to introduce mathematical concepts with other local wisdom.