AbstractThis study aims to know the effectiveness of the use of systematic approach to problem solving to improve students' ability to solve the accelerated uniform motion in SMA Negeri 1 Sungai Ambawang. The research method used was Pre-Experimental Design with the design of One-Group Pretest Posttest Design. The sample of this study involved 24 MIA 1 class X students who were selected using Intact Group Random Sampling. The test used in this study is a limited description of 4 questions given before and after treatment. The results of the study found: (1) the average score of the students 'abilities before and after completing the questions was 13.33 and 36.42; (2) there were differences in students' ability to solve accelerated uniform motion before and after being taught using systematic approach to problem solving (p <0.05); (3) the effectiveness of using systematic approach to problem solving to improve students' ability to solve accelerated uniform motion is relatively high (ES = 3.41). This research is expected to be used as an alternative to improve students' ability to solve problems. Keyword: Ability, SAPS, and Accelerated Uniform Motion
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