The Effectiveness of Problem Based Learning Assisted by Puzzle Teaching Aids on the Understanding of Geometry Concepts of Fourth Grade Elementary School Students. Journal of Innovative Teaching and Educational Research, [S. l.], v. 1, n. 1, p. 17–28, 2026. Disponível em: https://journal.cakrajiyaedukasi.com/jiter/article/view/2. Acesso em: 6 oct. 2026.