Understanding of Mathematical Concepts Reviewed from The Use of The Cooperative Learning Model Group Investigation (GI)

Abstract

This study aims to find out whether there is a significant relationship between the understanding of mathematical concepts of students who use the group investigation type cooperative learning model and students who receive conventional learning at SMP Muhammadiyah 3 Bandar Lampung. In this study, the research population consisted of two classes with a total of 30 students, each categorized as a control class and an experimental class. The purposive sampling method was used for this study. The pretest-posttest control group is the research design used. In addition to using tools such as tests, observation sheets, and interview sheets, data is collected through documentation, observation, and interviews. The test consists of five essay questions that are tested for validity, reliability, discriminating power, and difficulty level. After the data were declared to meet the requirements of normality and homogeneity, the hypothesis test was carried out by independent sample test t. Independent random t-tests are used to check the validity, reliability, discriminating power, difficulty level, normality, and hypothesis of the data. The results showed that students in the experimental class had an average score of 84.33 after the test, and students in the control class had an average score of 73.50. Based on these findings, it can be concluded that students who use the Group Investigation type cooperative learning model have a better understanding of mathematics compared to students who use conventional learning methods.