PEMANFAATAN GEOGEBRA DALAM PEMBELAJARAN MATEMATIKA: STUDI IMPLEMENTASI PBL DAN TPACK PADA MATERI DIMENSI TIGA
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Abstract
This study aims to evaluate the effectiveness of integrating GeoGebra in mathematics
instruction through a Problem-Based Learning (PBL) model supported by the Technological
Pedagogical Content Knowledge (TPACK) framework in teaching three-dimensional geometry. The
research subjects consisted of 30 twelfth-grade science students and three mathematics teachers
from SMA Negeri 1 Sihapas Barumun, while the object of the study was the implementation process
of GeoGebra-assisted learning. A mixed-methods approach with an explanatory sequential design
was employed, combining quantitative data (tests and attitude questionnaires) and qualitative data
(observations and structured interviews). The results revealed a significant improvement in students'
conceptual understanding, with average test scores increasing from 78.5 to 87.2. Additionally, there
was a positive shift in students' affective responses, including enhanced motivation and selfconfidence, as well as increased technical and collaborative skills. In conclusion, the integration of
GeoGebra within the PBL-TPACK framework effectively enhances spatial reasoning, learning
engagement, and 21st-century skills in mathematics education.
Article Details
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