Freiman, Victor, e Dominic Manuel. «Relating Students’ Perceptions of Interest and Difficulty to the Richness of Mathematical Problems Posted on the CAMI Website». Quadrante 24, no. 2 (Dezembro 30, 2015): 61–84. Acedido Março 10, 2025. https://quadrante.apm.pt/article/view/22922.