Abstract
The purpose of this study is to describe the combinatorial reasoning ability of high school students in physics learning and to determine the characteristics and the instrument quality of combinatorial reasoning using written test. The research method used is Analyze Design Development Implementation and Evaluation (ADDIE). The written test has the characteristics to measure the ability of deductive hypothesis between variables, to determine the process of combining student reasoning in solving the sequence and series problems and use all possible alternative answers in solving problem systematically based on the stage of combinatorial reasoning. The combinatorial reasoning test was validated by expert and physics teachers. The research participants are student in six of high school grade eleven who had learn all of the concept in one terms. The results of the research show combinatorial reasoning ability of high school students that 24% of students had a high level of combinatorial reasoning, in this case the students are able to fulfill the combinatorial stages. 64% of students were in the medium category and 10.83% of students were in the low category
Highlights
Reasoning ability is very important in building intelligence thinking on all disciplines and as a key to effective learning [1]
The development aspects of the reasoning in the learning process are very important because the reasoning is the activity of abstract thinking that can support the understanding of physics [2]
Based on the results of tests conducted by TIMSS on Indonesian students, Indonesia is in a low category
Summary
This study aims to describe the combinatorial reasoning ability of high school students in physics learning and determine the characteristics and instrument quality of combinatorial reasoning using the written test. The written test has the characteristics to measure the ability of deductive hypothesis between variables, to determine the process of combining student reasoning in solving the sequence and series problems and using all possible alternative answers in solving a problem systematically based on the combinatorial stage reasoning. The research participants are a student in six high school grade eleven who had learned all of the concepts in one term. The research results show the combinatorial reasoning ability of high school students that 24% of students had a high level of combinatorial reasoning; in this case, the students can fulfill the combinatorial stages.
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