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.

This study aims to know the impact of the Creative Problem Solving learning model based on android on the learning outcomes of elementary school students. The numbers population was all students of SD Tunas Bangsa. The technique of determining the sample used simple random sampling. This research used pre-experimental with One Group Pretest-Posttest Design. Data collection techniques used learning outcomes tests to measure the student’s learning outcomes both before and after being given treatment, documentation, and observations about student learning activities and teacher observations regarding the implementation of the model during the learning process. Descriptive statistical analysis data described the students’ mathematics learning outcomes. Inferential statistical analysis to test the hypothesis using the dependent t-test or Paired-Sample T-Test with SPSS 21.0 version. The results of the research showed that there was an impact of the Creative Problem Solving learning model based on android towards learning outcomes. This is evidenced by the results of the pretest in the less category experienced an increase in posttest learning outcomes in the good category. It can be concluded that there is an the impact of Creative Problem Solving learning model based on android towards learning outcomes of elementary school students.

Teaching materials in the form of modules are very important to be used in the learning process, especially in mathematics subjects at elementary schools. This study aimed to develop creative problem solving (CPS) based on mathematics learning materials. Method used Research & Development (R&D) with Four-D consisted of 4 stages of development, namely: Define, Design, Develop and Disseminate. The number of participants in this study consisted of 30 students from grade V elementary school consisted of 19 female students and 11 male students. Based on the results of the limited trial analysis, it was found that the module used was valid and reliable with a note that it could be used with revisions. The results of the analysis on the module teaching materials product test were valid and reliable category and used without any revision. The results of the development of the module device that is applied to the creative problem solving model in students improve problem solving abilities by 85%, this shows that students' problem solving abilities are classically complete.