PENERAPAN PENYELESAIAN MASALAH HELLER UNTUK MENINGKATKAN KEMAMPUAN MENYELESAIKAN SOAL MATERI GERAK LURUS

Abstract

Abstract

This study aimed to show the effectiveness of the implementation of the Heller"™s problem solving in improving student"™s ability to solve questions on straight-motion at SMAN 6 Pontianak. One group pretest-posttest was used in this study. This study involved 27 students of grade XI which had taken by intact group. The instruments of this study were 5 essays pretest and posttest. Based on pretest"™s data analyze, visualize the problem was the highest student"™s ability (49,8%) and execute the plan was the lowest student"™s ability (20%).But according to posttest"™s data analyze, visualize the problem was the most mastered by students (90,8%). The improvement of problem-solving ability was calculated by gain-score test, and got 0,33 in fairly good category. Heller"™s problem solving was effective in improving student"™s ability to solve the questions with the effect size of 1,4 in the high category. So, this study could be an alternative in improving student"™s ability to solve the questions.

Keywords: Ability, Straight-motion, The Heller"™s Problem Solving