GeoGebra-Assisted Instruction and Its Impact on Solid Geometry Achievement: A Mixed-Methods Study in the Philippine Context

Solid geometry remains a persistent challenge in secondary mathematics education due to its reliance on spatial visualization skills, which are often underdeveloped through traditional instruction. This study explores the effectiveness of GeoGebra-Assisted Instruction (GAI) in enhancing student achievement and engagement in solid geometry among Grade 10 students in the Philippines. Drawing from a robust literature base and a sequential explanatory mixed-methods design, the study investigates the impact of GAI on academic performance, spatial visualization, and student engagement. It also examines how socio-demographic variables—such as sex, prior academic performance, home technology access, and parents' educational attainment—mediate learning outcomes. The findings aim to inform localized, evidence-based pedagogical strategies for integrating technology in mathematics education.