THE EFFECTIVENESS OF TEACHING TO INDUCE THE CONCEPTUAL CHANGE (M3PK SIMSON TARIGAN) TO INCREASE STUDENT’S ACHIEVEMENT AND CHARACTERS ON TEACHING ACID BASE SOLUTION

The purpose of this research was to determine a difference of student‟s achievement is taught by M3PK
SimsonTarigan compared by conventional method. The research was conducted in Senior High School of MAN
2 Model Medan and the sample was randomly selected (random sampling). The experiment class taught by M3PK SimsonTarigan, while the control class taught by conventional method. The data analysis of pretest in experiment class is 17.25 ± 6.17 and posttest is 83 ± 6.16. While the pretest in control class is 18 ± 7.15 and posttest is 73 ± 5.48. Based on the hypothesis test of gain at significant level α = 0.05 showed that is t calculate>ttable (5.80 > 1.69), it conclude that the student's achievement taught by M3PK SimsonTarigan is higher than student's achievement taught by conventional method with the percentage of effectiveness is 16.25%. The development of student's characters, there are responsibility and activeness that observe in experiment class during twice meetings as much 61.39% for responsibility and 54.03% for activeness.