This research aims to develop worksheets through Creative Problem Solving (CPS) model to improve students' creative thinking. The implementation of the research conducted by Research & Development (R & D), with a model of Four-D development. This model consists of 4 stages of development: Define, Design, Develop and Disseminate, with the development of learning mathematics of worksheets for the material fractions through Creative Problem Solving (CPS) model to improve creative thinking the fifth-grade students of SD Tunas Bangsa Makassar. The instrument used in this research was the sheet validity test, sheet test the practicalities, and the post-test (students thinking creatively). Based on the validity test results, worksheets through the model of creative problem solving (CPS) with an average value of 4,01 and valid category. While the test results in the practicalities when the trial was limited worksheets with model creative problem solving (CPS) belongs to the category was very practical, with the percentage of 82,43%. Based on the post-test results, students' creative thinking was the category of creative with a percentage of 81,68%. Finally, it can be concluded that worksheets through a model of creative problem solving (CPS) to improve students' creative thinking that developed were valid, practical, and useful. So it can be applied in class V of mathematics subject.
This study aimed to know the effectiveness of creative problem solving (CPS) based mathematics worksheet reviewed by reasoning ability of students’ elementary school. This study used experimental method with Randomized Subject Posttest Only Control Group Design. The samples of this study consisted of two classes namely experimental class (Creative Problem Solving based Mathematics Worksheet) and control class ( conventional method). The taking of sample was conducted by cluster random sampling. Technique of data collecting consisted of cognitive aspect using objective test method and affective aspect using questionnaire. Technique of data analysis applied descriptive and inferential analysis. The hypothesis test used t-test by requirement of normality test and homogeny. The result of study indicated that (1) learning by using creative problem solving (CPS) based mathematics worksheet was implemented well. (2) The implementation of creative problem solving (CPS) based mathematics worksheet was reviewed by aspects: (a) mean score of students’ reasoning was 87,12 categorized as a very good. The gain was 0,78. The students’ reasoning ability classically was 91,25% ≥85%. (b) students’ learning activity was categorized as a good. (c) responds were categorized as a positive. The result of hypothesis test on 0,05 significant using t-test indicated that learning of creative problem solving (CPS) based mathematics worksheet was effective to students’ reasoning of elementary school.
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