COLLEGE STUDENT’S WORKSHEET BASED ON PROBLEM WITH SCIENTIFIC APPROACH TO DEVELOP CRITICAL THINKING SKILL

The objective of this research is to get the model,testing the appropriateness level,the legibility after applying college student’s worksheet based on problem with scientific approach to develop critical thinking skill of college student in general of physics I academic Year 2014/2015 in one of the universities in Medan. This research method was a research and development (R & D) with 4D stages (define, design, develop, and disseminate). In the stage of limited test this research using pre-experiment method type one-group pretest-posttest.The data collection method in this research was an essay test form consist of 16 questions to measure critical thinking skill. The subject in this research consist of a group with the total amount was 26 people, it was experimental group by applying learning activities using college student’s worksheet based on problem with scientific approach .Based on the result which obtained in this research, the average value of pre-test was 19.11 and the average value of posttest was 55.23. Based on the results of the test data analysis showed that learning through college student’s worksheet based on problem with scientific approach can develop the college student’s critical thinking skill. The percentage of N-gain raising critical thinking skill of university student was 44% in the intermediate category.