Kemajuan Belajar Siswa pada Geometri Transformasi Menggunakan Aktivitas Refleksi Geometri

Irkham Ulil Albab • Yusuf Hartono • Darmawijoyo Darmawijoyo
Journal article Cakrawala Pendidikan • October 2014 Indonesia

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(Bahasa Indonesia, 11 pages)

Abstract

This study was aimed at describing the students' learning progress on transformation geometry supported by a set of learning activities based on Indonesian Realistic Mathematics Education. The study was designed into three stages, that is, the preliminary design stage, the design testing through initial instruction and experiment, and the restrospective analysis stage. In this study, Hypothetical Learning Trajectory (HLT) played an important role as an instructional design and a research instrument. HLT was tested to 26 seventh grade students. The data were collected through interviews, observations, and field notes. The findings of the study showed that this instructional design could stimulate students to provide reflection characteristics and other transformation geometry informally, to classify them in the transformation isometry in the second level, and to find the reflection supporting line in the more formal level. In addition, the reflection supporting line was used by the students to draw the reflection image and the mirroring pattern and to understand the rotation and translation shapes as a combination of reflection at the highest level.

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Cakrawala Pendidikan

Cakrawala Pendidikan is an open access, peer-reviewed research journal that is published by the I... see more