The Development of Engklek Geometri Learning Media to Preserve Traditional Game

Engklek Geometry is one of mathematics learning media for rectangular material. The purpose of this research is to describe the development process of Engklek Geometry learning media to be valid, reliable, and effective. The development model used in this research is the 4-D development model, and the research method is developed with quantitative descriptive approach. Engklek Geometry learning media generated in this development research is valid, reliable, and effective for rectangular material. The value product of Engklek Geometrimathematics learning media is 3.17, it is"valid" category. Media effectiveness is reviewed from four aspects, namely learning outcomes, student activities, student responses, and teaching ability. The result of this research in class VII C SMP Muhammadiyah 4 Surabaya with classical completion percentage 89,28%, student activity is in the “active” category with percentage 94,95%, student response is "very strong" category with percentage 87,5%, and the value of the teacher's ability is 3.72 classified as "very good" category. While in the second trial in class VII E SMP Muhammadiyah 2 Surabaya obtained the results of learning with a percentage of classical completeness 93.1%, student activity with a percentage of 95.85 is in the "very active" category, student responses obtained percentage 82.07% "very strong", and the value of the teacher's ability is 3.59 classified as "very good" category.