<![CDATA[Mathematics as one of the subjects in the school is considered a very important role, because mathematics can increase students ' knowledge in thinking logically, rationally, critically, thoroughly, effectively, and efficiently. Therefore, the knowledge of mathematics must be mastered as early as possible by students. But in fact, many students are less fond of mathematics because it is a very difficult and confusing lesson. The lack of interest and motivation of children in studying mathematics automatically affects students ' learning achievements themselves. The lack of child motivation in learning can be caused by a few factors, such as hard-to-understand material, an uncomfortable and pleasant classroom atmosphere, a factor of the teacher, and others. Most student conditions in the classroom have varied academic skills. Therefore, teachers are required to overcome learning difficulties by using suitable or appropriate learning methods in order to help students in the learning process become effective. The type of research used in this study is experimental research and the approach used is a quantitive approach. The population in this study is all students of the class VII private junior high School Muhammadiyah Ende numbering 30 people, and the sample is a grade VII B students as many as 15 people. The results of descriptive analysis showed that the cooperative learning device type is suitable for use in the set material because the guidance of classical learning has reached 100% of the type of cooperative learning STAD improve student learning outcomes because the analysis of covariants (ANAKOVA) obtained statistic F = 16.13728 with DK pemtell = 1 and DK denominator = 27, giving a significant value]]>
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