Designing Hypothetical Learning Trajectory for Rotation Using Realistic Mathematics Education and Ethnomathematics

Abstract

This study aims to develop a learning trajectory to help students understand the rotation material and be motivated to learn. This study uses the context of the tedhak siten tradition which is used as a learning resource. The method used is design research with three main activities: preliminary design, design of the experiment (pilot experiment and teaching experiment), and retrospective analysis. This research involved class IX students of SMP Negeri 6 Semarang who carried out activities according to the Realistic Mathematics Education (RME) approach. The learning trajectory with the context of the tedhak siten tradition on rotation material consists of 3 activities, namely: 1) observing the traditional tedhak siten videos to find the characteristics of rotation, 2) finding formulas and drawing shadows of the results of rotation, and 3) solving contextual problems related to rotation. This article presents the initial stages of design research, namely preliminary design to provide detailed explanations at an early stage and ready to be tested at the design of the experiment stage.