THE INFLUENCE OF EXPERIMENTAL METHOD USING PAS IN SENIOR HIGH SCHOOL TOWARD STUDENTS PROCESS SKILL AND ACHIEVEMENTIN REDOX REACTION

This research purposed to know the influence of experimental method using PAS toward students process skill and achievement in redox reaction. In addition, this research also purposed to know the feasibility of PAS guidance, the result of testing PAS guidance in laboratory UNIMED, percentage skill of student and students perception to PAS guidance. The population of this research is all Senior High School students grade X at MAN 2 Model Medan and the sample are 2 classes of students in superior class, experiment class that taught with experimental method using PAS and control class that taught using conventional method. The instrument that used in this research is 15 questions in the form of multiple choice that has been standardized by statistic method by using t-test with validity test ; rcount > 0.444, reability test ; 0.781 > rtable with category is high. Then, the result data was analyzed with normality test and homogeneity test. In experiment class normality test for gain data is 1.80 and in control class normality test for gain data is 2.37 with X2table is 11.07, so the data both of class is normal distributed. In homogeneity test for pre-test Fcount is 1.03, post-test is 1.11, gain is 1.00 with Ftable is 2.07, so the data are homogenous. Based on the analysis data of research, both of class seen the differentiate of student