Development of Mathematics Learning Tools Based on the M-Apos Approach to Improve the Reasoning Ability of Class VII Students

Abstract

Purpose: The purpose of this study was to produce a valid, practical and effective learning tool which is students’ worksheet (LKPD) based on the M-APOS approach to improve the mathematical reasoning abilities of seventh grade junior high school students.   Methodology/design/approach: This study uses the Plomp model, which consists of three stages, namely preliminary research, development stage, and assessment stage. The research subjects were seventh grade Junior High School students. The instruments used are LKPD validation sheets, teacher and student response questionnaires, learning implementation observation sheets, and tests. Data was processed using percentages and t-test.   Results and conclusion: Based on the results of the research, several conclusions were obtained, namely (1) The learning tools based on the M-APOS approach have met the valid product quality criteria both in terms of content and constructs, (2) The learning tools based on the M-APOS approach were practical to use in the learning process because they are attractive, easy to use, and time efficient, and (3) The learning tools based on the M-APOS approach have also met the criteria for effectiveness because they have a positive impact on students' mathematical reasoning ability.   Recommendations: It is recommended that teachers are able to use this LKPD for the learning process. Students should be involved in the process of understanding the learning concepts.