Abstract
This study aims to: 1) Develop teaching materials based on a valid metacognition approach to improve students' understanding of mathematical concepts; 2) Developing teaching materials based on a practical metacognition approach to improve the ability to understand students' mathematical concepts; 3) Develop teaching materials based on an effective metacognition approach; 4) To analyze the increased ability to understand students' mathematical concepts by using teaching materials based on metacognition approaches. This research is a development research using a 4-D development model, the teaching materials developed from this study are: Learning Implementation Plans, Teacher Books, Student Books, Student Worksheets, And Tests Ability To Understand Mathematical Concepts. From the results of trial I and trial II, it was obtained: 1) Teaching materials based on the metacognition approach developed have met valid criteria from several criteria; 2) Teaching materials based on the metacognition approach developed have met Practical criteria from several criteria; 3) Teaching materials based on the metacognition approach developed have met the effective criteria of several criteria; 4) there is an increase in the ability to understand students' mathematical concepts by using instructional materials based on the metacognition approach developed, in the trial I obtained an average score of pretest 54.66% and posttest score 73.86%, and in the second trial with an average pretest score of 57.87% and posttest score of 78.4%.
Highlights
Understanding a concept well is very important for students, because in solving problems students must know the rules that are relevant and these rules are based on the concepts obtained
Teaching materials based on the developed metacognition approach are said to be practical in terms of (1) expert / practitioner assessment of the developed teaching materials can be used with little revision or without revision; (2) teachers and students state that the instructional material developed can be used and (3) the results of observing the implementation of teaching materials in the class are included in the minimum high category (3≤PP
Based on the results of the analysis and discussion in this study, several conclusions were presented as follows: 1. Teaching materials based on metacognition approaches that are developed valid, practical and effective are used to increase the ability to understand mathematical concepts and learning independence of students of Budi Mulia Medan Middle School
Summary
Understanding a concept well is very important for students, because in solving problems students must know the rules that are relevant and these rules are based on the concepts obtained. Students are required to understand or understand what is being taught, to know what is being communicated and to be able to use its contents without having to connect with other things. Walle [2] states "understanding can be defined as a measure of the quality and quantity of an idea's relationship with an existing idea". The level of understanding varies, understanding depends on the idea that has been owned and depends on making new relationships between ideas. According to Gagne [3] states the concept is "an abstract idea that allows classifying objects into examples and non-examples"
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