YAP, Purisima. van Hiele Levels of Thinking Predict Students’ Mathematics Grade. JPAIR Multidisciplinary Research, Philippines, v. 18, n. 1, p. 93–105, 2014. DOI: 10.7719/jpair.v18i1.296. Disponível em: https://philair.ph/index.php/jpair/article/view/296. Acesso em: 22 dec. 2024.