Design DevelopmentLearning Mathematics With Approaches Constructivistic In Sekolah Menegah Pertama Negeri 2 Segedong.The purposes Development of the design to produce a design on the constructivist approach to learning mathematics. The design was developed Scenario Learning. Development of the model used to generate the components of the product refers to the model development Willis (1995) Reflective, Recursive, Design, and Development (R2D2). Test instruments such as observation sheets, Questionnaires and documentation. Review and test results were analyzed descriptively. Based on the results of the review, it appears that the stated learning scenario and 92.85% is considered good. Utilize and deploy products constructivist learning design is suggested learners (1) Expanding horizons constructivist learning, (2) understand the components of this product comprehensively, (3) Knowing the characteristics of learners, (4) Mastering the fine materials, (5) Placing themselves as learning partners, and (6) dissemination and collaboration both internally and externally in relation to the implementation of constructivist learning
