Development of Geogebra-Assisted Learning Tools to Improve Students' Mathematical Communication Skills and Learning Motivation

Abstract

This study aims to produce GeoGebra-assisted learning tools to improve students' mathematical communication skills and learning motivation in terms of validity, practicality, and effectiveness. The research model uses the ADDIE model, namely analysis, design, development, implementation, and evaluation. The subjects of this study were students of class IX E MTs Negeri 9 Bantul. The research instruments used consisted of validation sheets, practicality assessment sheets by teachers and students, observation sheets for learning implementation, mathematical communication ability test questions and learning motivation questionnaires. Validity and practicality data analysis was carried out by converting quantitative data into qualitative forms on a five-point scale. Effectiveness data analysis was carried out using Paired sample t-test and one sample t-test. Based on the data analysis, it is known that the GeoGebra-assisted learning device developed meets the valid aspects with the criteria of "Good", then the practicality test developed by the teacher's assessment of the teaching module with the criteria of very "Good", the student's assessment of the LKPD with the criteria of "Good", and the results of the implementation of learning are assessed with an average percentage of more than 85%. The effectiveness of the mathematics learning device developed with the criteria of effective based on the percentage of student learning completion in the post-test of communication skills is more than 75%. It can be concluded that there is a significant increase between the results of the pre-test and post-test of communication skills and student learning motivation.