THE IMPLEMENTATION OF POGIL STRATEGY WITH WORKSHEET MEDIA TO INCREASE STUDENTS’ INTEREST AND ACHIEVEMENT IN TEACHING COLLOIDAL SYSTEM BASED LESSON STUDY

The objectives of this research are to get the comparison between POGIL strategy with worksheet media based on lesson study and direct instruction method to increase student’s achievement, and student’s interest. Beside of that, this research also conducted to know the correlation between student’s achievement and student’s interest. This research was done in SMA N 2 Medan, SMA N 3 Medan, and SMA Swasta Raksana. Population is all the students in each of schools which taken by purposive random sampling. The research instruments are achievement test and non test in list interest form. Both of instruments have been validated. The research data analyzed by SPSS -18 for windows. The result data shows that (1) The student’s achievement taught by between POGIL strategy with worksheet media based on lesson study give higher significance difference than direct instruction method. It can be seen from The average of gain in experiment class are (0.76±0.02), where the highest is at SMAN 3 Medan (0.86±0.09) and the lowest is at SMAN 2 Medan (0.71±0.13), and in control class are (0.56±0.13), Ha1 is received and Ho1 is refused where Sig. < α (0.000 < 0.05), (2) The student’s interest taught by POGIL strategy with worksheet media based on lesson study give higher significance difference than direct instruction method. It can be seen from the average of interest and also proved with t-test, SMA N 2 Medan (70,5), SMA N 3 Medan (82,96) and SMA Swasta Raksana (80,25) while in the control class SMA N 2 Medan (59,82), SMA N 3 Medan (76,05) and SMA Swasta Raksana (70,43), Ha2 is received and Ho2 is refused where Sig. < α (0.000 < 0.05), (3) There is correlation between two variables that are student’s achievement and student’s interest at significant level α = 0.05, Ha3 is received and Ho3 is refused where Sig. < α (0.000 < 0.05), with Pearson correlation (r) in SMAN 2 Medan (0.508), SMAN 3 Medan (0.553), and SMA Swasta Raksana (0.311), it means categorized in high correlation.