NAUKUSHU, S. T.; KASANDA, C. D. Exploring the understanding of the number pi: A case of pre-service secondary school mathematics teachers at a selected institution of higher learning in Namibia. Namibia Educational Reform Forum Journal, [S. l.], v. 26, n. 1, p. 13–19, 2019. Disponível em: https://journals.nied.edu.na/index.php/nerfj/article/view/128. Acesso em: 6 jul. 2024.