The implementation of problem based learning model with the science writing heuristic approach to increase mastery of concept and critical thinking skill at junior high school student on simple machine

Abstract

This research aims to know the increase mastery of concept and critical thinking skill through problem based learning model with a science writing heuristic approach on simple machine. Methods of this research using pre-experimental with one group pre-test - post-test design. The subject of this research is student grade VIII at one of Junior High School in Bandung. Instrument that used for this research is a test form of mastery of concept and critical thinking skill. Improvement mastery of the concept and critical thinking skill is measured by the normalized gain. The result shows an average gain of N-gain the mastery of concept is 0.59 with fair category. And the critical thinking skill is 0.63 with fair category. The response of students to the implementation of problem-based learning models with the Science Writing Heuristic approach shows that almost all students gave positive responses. Thus, the increase of mastery of concept and critical thinking skill and at students on the simple machine through the implementation of problem based learning model with the approach science writing heuristic has improved. Student responses to the learning model that is implemented positively.