Implementasi Model Pembelajaran Cooperative Learning Type Stad dengan Pendekatan Kontekstual untuk Meningkatkan Kemampuan Siswa dalam Memahami Trigonometri

SMA Negeri 1 Sukapura in class X MIA has learning problems in Mathematics, namely Trigonometry. In Class X MIA SMA Negeri 1 Sukapura, many students do not understand the material presented by the Mathematics teacher. The low understanding of students towards Trigonometry is caused by students having difficulty understanding the material presented by the teacher., Students are not actively involved in learning and it is difficult to gain deep understanding. This results in students' ability to understand trigonometry. Therefore, this study takes the title "Implementation of STAD type Cooperative Learning Learning Model with a Contextual Approach to Improve Students' Ability to Understand Trigonometry in Class X MIA SMA Negeri 1 Sukapura Academic Year 2017/2018" Learning Model Cooperative Learning type STAD through a Contextual Approach is a teaching method that emphasizes activities and interactions between students to motivate each other and help each other in mastering the subject matter in order to achieve maximum performance by presenting real-world situations into the classroom. Comparison of research results, namely in the pre-cycle the number of students who finished studying was only 19 students or 76%, then in cycle 1 it increased to 20 students or 80%, and increased in cycle 2 to 22 students or 88%. From the comparison of the results of the study, It can be concluded that, with the concept of 4X meetings, the STAD Cooperative Learning model learning with a Contextual Approach has a positive impact on the process of increasing students' ability to understand Trigonometry