Mastery of Mathematics Concepts by Using Cooperative Learning Model Type Numbered Head Together

Abstract

The type of this research is a classroom action research that aims to determine whether applying the cooperative learning type Numbered Head Together (NHT) can improve the mastery of mathematical concepts for class XII students. MIPA.2 at SMAN 2 Sidrap. The subjects of this study were students of class XII.MIPA.2 at SMAN 2 Sidrap. This research is divided into two cycles. Cycles I and II have four meetings each. Data retrieval was carried out by using learning outcomes tests at the end of each cycle and observing student activity. Learning outcomes data were analyzed by quantitative analysis, and observational data were analyzed by qualitative analysis. The results of this study indicate a significant increase marked by an increase in students' mastery of mathematical concepts. Based on the test results at the end of the second cycle, the average value of the second cycle test was 78.0, with classical completeness criteria reaching 83.33% (the average learning achievement test increased by 11.5 and classical completeness criteria increased by 43.33% of the pre-cycle value). The student activity achievement rate is 82% or is in high qualification. From the results of this study, it can be concluded that the application of the cooperative learning type Numbered Head Together (NHT) can increase the mastery of mathematical concepts for students of class XII.MIPA.2 at SMAN 2 Sidrap.