Abstract:
This study was conducted at SMP Negri 2 Gaung Anak Serka, Indragiri Hilir in the second semester of the school years 2011/2012. The subject of the research is students of class VIII B. There are 17 student in that class, consisting 13 girl and 4 boys who have heterogeneous academic ability. The goal of this study is to improve students’ mathematics achievement, especially in geometrical (cubes, blocks, prisms, and limas) by applying the Cooperative Learning Think Pair Square Approach. This study is an action research. There are two cycles and four stages in this study. Each cycle has four stages, they are planning, action, observation, and reflection. The result of research showed that the improvement of students learning achievement. The percentage of first cycle showed that students who get minimum achievement criteria (MMC), from 29.41% to 41.17%. While, in the second cycle, the percentage of students who minimum achievement criteria (MMC) increase to 52,94%. In other words, the implementation of Cooperative Learning Think Pair Square Approach can improve students’ mathematics achievement in class VIIIB of SMP Negeri 2 Gaung Anak Serka,
especially in geometrical in the school years 2011/2012.
