THE EFFECTIVENESS OF COOPERATIVE LEARNING MODEL NUMBERED HEAD TYPE TO STUDENT MATHEMATICS PROBLEM SOLVING ABILITY

The purpose of this research is to determine the Effectiveness of the Numbered Head Together (NHT) Cooperative Learning Model on the Mathematical Problem Solving Ability of SMA N 1 Batipuh Students. While the formulation of the problem in this study is: (a) How is the problem-solving ability of students after the NHT cooperative learning model is applied. (b) Is the NHT cooperative learning model effective in increasing at least 60.42 points on the mathematical problem-solving ability of XI grade students of SMA N 1 Batipuh?. The research method used is an experimental method with a research design of One Group Pretest-Posttest Design. The research sample was taken through a random cluster sampling technique. The sample obtained for class XI IPS5 with 32 students, the experimental class is a class that is taught with the Numbered Head Together type of cooperative learning model. Data analysis to test the hypothesis using t-test for paired data. The conclusion of this study is that the cooperative learning model of the NHT type is effective for increasing at least 60.42 points on the mathematical problem-solving ability of XI grade students of SMA N 1 Batipuh