Silvina, N., Tumanggor, A.P., Tarigan, A.B., Lubis, D.M., Sibarani, M.A.T. and Siregar, B.H. 2025. Effect of Deep Learning Approach With GeoGebra-Based Interactive PowerPoint and Animated Videos on Concept Understanding. Jurnal Pendidikan Matematika Universitas Lampung. 13, 3 (Sep. 2025), 157–171. DOI:https://doi.org/10.23960/mtk/v13i3.pp157-171.