The Effect of Problem Based Learning (PBL) towards Critical Thinking Used Computer Simulation

This study aims to examine the effect of PBL used simulation named adobe flash on critical thinking skills. The research was quasi-experimental using a pretest-posttest control group design. The population of this study was all of the 11th graders at one of SMA in Medan. The sample class experiment using PBL were used adobe flash and control using traditional. The Data were collected by the student's critical thinking test based on the contextual problem in an essay. The Data were analyzed by using a t-test and N-Gain. The results indicated resources that the pretest scores for the experimental and control group were 38.93 and 36.25 and the posttest scores were 74.45 and 53.95. Based on the result of the t-test, there was a significant effect between critical thinking skills applied PBL used with adobe flash.