THE DIFFERENCE OF STUDENTS ACHIEVEMENT IN MATHEMATICS BY USING GUIDED DISCOVERY LEARNING MODEL AND COOPERATIVE LEARNING MODEL JIGSAW TYPE AT SMA N 3 PEMATANGSIANTAR

The type of this study is a quasi-experiment study. The objectives of this study is to know any difference of students` achievement in mathematics which using the model of guided discovery learning with cooperative learning model JIGSAW type in class X SMA N 3 P. Siantar.The population of this study is all students in SMA N 3 P. Siantar. The sampling technique applied was cluster random sampling. The experimental class I that chosen is X-1 consisted of 36 students, meanwhile the experimental class II that chosen is X-6 consisted of 36 students. The instrument used to measure the students` mathematics achievement was a essay test. The normality test used was Lilliefor`s test and the homogeneity test by using Fisher test. The data analysis technique was t-test at the level of significance � = 5%.The study result showed that there is the difference of students` achievement in mathematics which using the guided discovery learning model with cooperative learning model JIGSAW type in grade X SMA N 3 P. Siantar where obtained t_calculation = 2.504 at � = 0.05 and t_table= t_((0.975,70)) = 1.995, then t_calculation> t_table.