Designing teaching materials based on process skills approach to mathematical representation ability in polyhedron

Abstract

The purpose of this study was to develop the didactical design of teaching materials based on process skills approach to mathematical representation ability in polyhedron. The didactic design was made in the form of module for grade VIII based on the Didactical Design Research (DDR) stage, namely the didactic situation analysis stage before learning, the methapedadidactic stage, and the retrospective stage. At the stage of the didactic situation analysis resulted in a learning obstacle, didactic anticipation of teaching materials in the form of mathematics modules based on mathematical representation abilities and the results of validation of modules by experts. In the methapedadidactic stage, the responses of teaching material users were obtained to 26 students and one mathematics teacher in SMPN 1 Waled. While the results of filling out the questionnaire by the teacher obtained very positive response criteria and the results of the response questionnaires filled out by students obtained positive response criteria. In the retrospective stage, anticipation of user responses is obtained after the teaching materials are implemented. The results of module validation by four experts are categorized as very valid.