D. YULIANA SINAGA. The Effect Of Ralistic Mathematics Learning Model And Project-Based Learning Model On Problem Solving Ability And Motivation Of Students In Class V Private Sd Markus Medan Helvetia. International Journal of Educational Research & Social Sciences , [S. l.], v. 3, n. 2, p. 590–600, 2022. DOI: 10.51601/ijersc.v3i2.268. Disponível em: https://ijersc.org/index.php/go/article/view/268. Acesso em: 7 nov. 2024.