STUDENTS ACHIEVEMENT AND STUDENTS CHARACTER OF COOPERATION AND ACTIVENESS ON THE TEACHING OF ELECTROLYTE AND NON ELECTROLYTE SOLUTION IN SENIOR HIGH SCHOOL

The main objective in this research is to know the influence of discovery learning model towards of students achievement and students character of cooperation and activeness. The other objective in this research is to know the average percentage of students cooperation and students activeness can be developed by applied discovery learning model. This research was conducted in SMA Negeri 11 Medan on the second semester. The sample that use in this research are students in grade X in two classes, one class as control class and the other as experimental class. The research instrument that uses in this research consist of test instrument (evaluation test) and non test instrument (observation sheet). The instrument that used in this research had been tested based on validity and reliability. Based on validity, from 30 questions, there are 25 questions are valid and rcount for reliability test is 0.899. it means that the questions are reliable with high categories. From the research result, the average of posttest in experimental class is 83.030 ± 6.952 with gain 0.774 (high) and the average of posttest in control class is 71.212 ± 5.453 with gain 0.609 (medium). The data of this research had been analyzed by using normality test and homogeneity test, which is shown that data gain are normal distributed and homogeny. It is requirement to do hypothesis test. Based on the hypothesis test using T-Test was gotten value of significancecount (0.000) < significance level (0.05) in other that Ha is accepted and Ho is rejected. It means that the students achievement who learnt using discovery learning model is higher than the students achievement who learnt using conventional method. The percentage of students cooperation and students activeness from observation sheet data were developed from first meeting up to third meeting. The percentage of development of students cooperation is 64.87%, while for students actives also 64.87%.