Model of Geometry Realistic Learning Development with Interactive Multimedia Assistance in Elementary School

Initial research results indicate there are problems in learning mathematics, especially in geometry material in elementary schools. Students still have not had the opportunity to build their own knowledge. The purpose of this study is to produce a realistic learning model of interactive multimedia-assisted geometry to improve the reasoning ability of fourth grade elementary school students who meet valid, practical and effective criteria. This research is a design research that combines the Plomp and Gravemeijer & Cobb development model which consists of three phases: preliminary research (experimental preparation), prototyping phase (conducting experiments, retrospective analysis) and assessment phase. The subjects of the study were students of grade four SD thirty seven Pekanbaru. The results of the study indicate that the learning design developed has fulfilled valid, practical and effective. Valid in terms of content and construction. Practical in terms of implementation, convenience and time required. Effective in terms of potential impact on reasoning ability.