Development of Learning Tools Based on Realistic Mathematical Education Approach for Quadrangle Topics for Grade VII Junior High School

This article contains the core report on the results of research on the development of learning tools that apply one of the learning approaches to teach the topic of Quadrangles to seventh grade junior high school students. Learning tools based on the Realistic Mathematics Education Approach on the topic of the Quadrangle were developed using a development model adapted from the model of Thiagarajan et al (1974). The model consists of four stages, namely define, design, develop and desseminate which in this study was adapted by eliminating the 4th stage due to limited time and research funds. After the define and design stages, the researcher obtained a set of development results called the initial prototype. At the develop stage, an assessment of the initial prototype device is carried out through a validation process and a field trial process. The validation process is a cyclical activity that can be stopped after valid criteria are achieved. The trial process is an activity to obtain data on the practicality and effectiveness of the developed and cyclical device. This activity is discontinued when the criteria of practicality and effectiveness of war have been met. Through these three stages of development and three validation rounds and two field trials, learning tools were produced that meet the valid, practical and effective criteria for teaching the Quadrangle topic to grade VII junior high school students.