SUMADJI; YUWONO, Timbul. Developing Cognitive Conflict to Overcome Students’ Thinking Difficulties. Journal of Education and Learning Mathematics Research (JELMaR), [S. l.], v. 1, n. 2, p. 104–113, 2020. DOI: 10.37303/jelmar.v1i2.79. Disponível em: https://jelmar.wisnuwardhana.ac.id/index.php/jelmar/article/view/79. Acesso em: 25 aug. 2026.