ARISTA, Gina Dwi; ISROK'ATUN, Isrok'atun; AENI, Ani Nur. Effect of Problem-Based Learning Approach Assisted by GEO-KODE on Understanding the Mathematical Concepts of Composition and Decomposition of Plane Shapes. Kognitif: Jurnal Riset HOTS Pendidikan Matematika, [S. l.], v. 6, n. 3, p. 1143–1166, 2026. DOI: 10.51574/kognitif.v6i3.5358. Disponível em: https://etdci.org/journal/kognitif/article/view/5358. Acesso em: 16 aug. 2026.