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Imam Suwanto
Department of Mathematics Education, Universitas PGRI Semarang
Education Mathematics

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Developing Learning Trajectory Based Instruction of the Congruence for Ninth Grade Using Central Java Historical Building Achmad Fahrurozi; Suci Maesaroh; Imam Suwanto; Farida Nursyahidah
JRAMathEdu (Journal of Research and Advances in Mathematics Education) Vol. 3, No. 2, July 2018
Publisher : Department of Mathematics Education, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jramathedu.v3i2.6616

Abstract

This research aims to produce a Learning Trajectory Based Instruction (LTBI) that can help the ninth grade students understand the concept of congruence of the two-dimensional shape by examining Lawang Sewu as one of Central Java historical buildings. LTBI is defined as a teaching and learning trajectory that uses Hypothetical Learning Trajectory (HLT) for instructional decisions. The present research uses the design research developed by Gravemeijer and Cobb that consists of three phases; the preliminary design, design of the experiment (pilot experiment and teaching experiment), and  retrospective analysis. In this study, a series of learning activities is designed and developed based on the Realistic Mathematics Education (PMRI) approach. This research produced LTBI that consists of a series of learning processes embodied in three activities of (1) identifying and finding the properties which shapes are congruent shapes by watching Lawang Sewu video, (2) proofing two shapes are congruent through transformation (translation and rotation), and (3) solving problem related to the congruence of two-dimensional shape. The activity can help to improve the students’ understanding of the concept of congruence. Nevertheless, the present study is limited to the first stage of Gravemeijer and Cobb’s design research, namely preliminary design.
Co-Authors Achmad Fahrurozi Farida Nursyahidah Suci Maesaroh