IMPROVEMENT OF STUDENT LEARNING OUTCOME USING MODEL OF COLLABORATIVE BASED LESSON STUDY WITH STUDENT‘S WORKSHEET ON MATERIALS HYDROLYS

This study aims to determine whether the improvement of learning outcomes of students who are taught using Collaborative Learning Model Based on Lesson Study with Student’s Worksheet is higher than the improvement of student learning outcomes that are taught using Direct Instruction model with Student’s Worksheet on salt hydrolysis material. This type of research is an experimental study using Pretest-posttest Control Group Design. The research sample is class XI IPA 5 and XI IPA 7 MAN 1 MEDAN year 2015/2016 lesson taken by random sampling. The instrument used to determine student learning outcomes is objective test in the form of multiple choice amounted to 20 questions. Research data taken in the form of pre-test and post-test. Data analysis in this study used normality test with Shapiro-WiStudent’s Worksheet test on SPSS, homogenity test with Levene Test test on SPSS, and hypothesis test with Independent-Sample T Test on SPSS. From the average of gain, obtained percentage of increase of learning result of experiment class student equal to 78% while percent improvement of result of student learning control class equal to 63%. The result of this research is the improvement of chemistry learning result of students applying collaborative learning model based on lesson study with Student’s Worksheet higher than Direct Instruction learning model with Student’s Worksheet on salt hydrolysis material, it is proved by calculation on t test that is obtained by Sig. Thitung <α (0,000 <0.05).