<![CDATA[The students are difficult to understand about the materials of circle area, circle circumference, segment area, central angle and circumference angle material on the textbook and computer based learning media math. The textbook and computer based learning media have not facilitated the students to do an independent learning and had a realistic-based. The proposed solution of the problem is the development of a realistic-based computer based learning media for circle material. The development aims to know the validity and practice of realistic-based module for set material. The research uses 4-D model that consists of 4 stages, i.e. defining stage or need analysis, designing stage, developing stage, and disseminating stage. However, the research is only conducted until the third stage i.e. developing. The developing stage is conducted only to see the validity and practice of the computer based learning media. Data analysis is conducted descriptively with the validity result i.e. very valid in which reaching the criteria 4,5 and practice result i.e. very practice in which reaching the criteria 90%. It means that the Media Pembelajaran Berbasis Komputer Bentuk Tutorial dengan Pendekatan Realistik untuk Materi Lingkaran di Kelas VIII MTsN Model Padang is valid and practical.]]>
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