THE EFFECT OF CHILDREN LEARNING IN SCIENCE (CLIS) MODEL ON STUDENTS LEARNING OUTCOMES IN THERMAL EXPANSION TOPIC AT VII GRADE IN SMP N 1 TEBING TINGGI

The purpose of this research was to find out the effect of CLIS learning model on students learning outcomes in Thermal Expansion topic at VII Grade in SMP N 1 Tebing Tinggi. The research method was quasi experimental. The population was all students at class VII semester II consist of 9 classes SMP N 1 Tebing Tinggi. The sample of this research conduct two classes and consist of 56 students, class VII-8 as experiment class and class VII-9 control class and define by random cluster sampling. The result that was obtained: pre-test mean value of the experiment class was 45.19 and 43.1 was the mean value for control class. Post-test mean value of the experiment class was 76.79 and 62.93 was the mean value for control class.Standard deviation for two classes was 8.63 and 9.31. Normality of the pre-testand post test result from the both samples was normal for experiment class with Lcount < Ltable , 0.1335 < 0.173 and for control class 0.0727 < 0.173 andhomogeneous with Fcount < Ftable, 1.258 < 1.90. For post test experiment class with Lcount < Ltable , 0.1187 < 0.173 and for control class 0.1045 < 0.173 andhomogeneous with Fcount < Ftable, 1.258 < 1.925 for pre-test and Fcount <Ftable, 1.028 < 1.90 for post test. The testing criterion was accepted H0 if -1.65 < t <1.65 and refuse H0 in other condition. Here, H0 was refused because t is 5.73 and Ha was accepted. So it can be concluded that there was the effect of CLIS learning model on students learning outcomes in Thermal Expansion topic at VII Grade in SMP N 1 Tebing Tinggi.