Developing Mathematics Learning Devices Based on Creative Problem Solving Model in Elementary School

The aim of this study is to determine the characteristics of teaching materials with a valid, practical, and effective for Creative Problem Solving (CPS) model, to improve mathematics learning outcomes for elementary school students. The teaching materials developed were syllabus, lesson plan, student worksheets and modules. This research used Research & Development (R&D) with a Four-D development model consisting of 4 phases of development, namely: Define, Design, Develop and Disseminate. At the Define phase, the researcher conducts initial analysis, student analysis, concept analysis, performance/task analysis and analysis of the formulation of learning objectives. At the Design phase, the researcher arranges tests, selects formats, and designs the syllabus, lesson plans, worksheets, and modules based on creative problem solving. At the development phase, which consists of the assessment of experts with the results of the validation of teaching materials and the results of the validation of research instruments and the dissemination phase of the dissemination of research tools and results. The research instrument used the implementation of the model, student activities, teacher responses, students' responses and learning outcomes