Tangio, Z.D.Y., Ismail, S. and Irfah, A. 2026. The Effect of Using Genially on Eighth-Grade Students’ Understanding of Mathematical Concepts in the Pythagorean Theorem . Jurnal Pendidikan Matematika Universitas Lampung. 14, 2 (Jun. 2026), 157–167. DOI:https://doi.org/10.23960/mtk/v14i2.pp157-167.