Peningkatan Kemampuan Pemecahan Masalah Matematik melalui Discovery Learning Berbantuan Cabri 3D: Studi Eksperimen pada Materi Bangun Ruang

Abstract

This study investigates the effectiveness of the Discovery Learning model supported by Cabri 3D software in enhancing students’ mathematical problem-solving skills on the topic of three-dimensional solid figures at SMP Negeri 9 Tasikmalaya. The urgency of this research stems from the persistent low performance of students in mathematical problem-solving, attributed to conventional teacher-centered approaches that limit student engagement and the development of higher-order thinking skills. The research aims to determine whether integrating Cabri 3D with Discovery Learning leads to a significant improvement in problem-solving abilities compared to Discovery Learning alone. Employing a quasi-experimental design with pretest-posttest control groups, two randomly selected classes were involved: the experimental group received Discovery Learning assisted by Cabri 3D, while the control group experienced Discovery Learning without technological support. Data were collected using validated essay-based problem-solving tests and analyzed using both parametric and non-parametric statistical methods. The findings reveal that students in the experimental group exhibited a significantly greater increase in problem-solving skills, as indicated by higher normalized gain scores, particularly in understanding problems and devising solutions. The use of Cabri 3D facilitated visualization and exploration of geometric concepts, resulting in deeper comprehension and increased motivation. However, the aspect of reviewing solutions remained the most challenging for students. The study concludes that integrating dynamic geometry software within the Discovery Learning framework provides substantial benefits for developing mathematical problem-solving skills and recommends broader adoption of technology-enhanced instructional strategies in mathematics education.