Development media Ludo Build Flat is problem based to improve critical thinking skills fourth grade Elementary School students. Indonesian Journal of Primary Education, [S. l.], v. 7, n. 2, p. 207–216, 2023. Disponível em: https://ejournal-tasikmalaya.upi.edu/ijpe/article/view/429. Acesso em: 12 nov. 2026.