Implementation of GeoGebra-Assisted Mathematics Instruction to Improve Understanding of Dilatation

Saesar Adhe Prambudi

Abstract


This study aims to examine the implementation of GeoGebra-assisted mathematics learning in improving students’ understanding of the concept of dilation. GeoGebra is a mathematics software that integrates visual, algebraic, and geometric representations to support interactive learning. Instruction was conducted using the discovery learning model with a scientific approach, which includes the stages of introduction, stimulation, problem identification, exploration, analysis, verification, and generalization. During the learning process, students were given the opportunity to visually observe objects undergoing dilation, manipulate them using GeoGebra, and reflect on their observations through class discussions. Research data were obtained through learning activities, worksheet results, and practice problems. The results indicate that the use of GeoGebra helps students understand the concept of dilation more deeply, particularly regarding changes in the size, shape, and position of objects. Additionally, students are able to connect graphical, algebraic, and geometric representations within the context of dilation. GeoGebra-assisted learning encourages active student engagement, enhances interaction during discussions, and strengthens the ability to apply concepts in problem-solving. Thus, GeoGebra can be used as an effective learning medium to improve students’ understanding of the concept of dilation through a visual and interactive approach.

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