Development Of Interactive Learning Media Assisted By Desmos To Improve Mathematical Representation Abilities At SMP

Abstract

This study aims to describe: 1) the validity, practicality and effectiveness of the interactive learning media assisted by Desmos which was developed to increase students' mathematical representation abilities at SMP; 2) increasing students' mathematical representation abilities through interactive learning media assisted by Desmos. This study is development research using the Tessmer development model, formative evaluation type. This development model consists of two development stages, namely preliminary (determination) and prototyping (design and evaluation). From the outcomes of trial I and trial II it was gotten: 1) Interactive learning media assisted by Desmos to improve students' mathematical representation abilities which was developed met the criteria of being valid, practical and effective; 2) Increasing mathematical representation abilities using interactive learning media assisted by Desmos which has been developed as seen from the N-gain value in trial I of 0,41, increasing to 0,47 in trial II, meaning it is in the "medium" category. Based on the study results, it is suggested that teachers utilize interactive learning media assisted by Desmos in learning straight line equations to progress students' mathematical representation abilities.