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The purpose of this research was to develop mathematics learning media which were valid, practical, and effective. The mathematics learning media which was developed in this study consisted of mathematics instructional media which the topics was circle. Data were collected by using observation sheet of instructional media implementation, student's and teacher's response questionnaire, and test of students learning outcomes. The collected data analyzed descriptively. The result of this researchdoi:10.1088/1742-6596/1321/2/022099 fatcat:hnra2xsaj5bltgvocbig5erq54