Mathematics (2) test (1) projet (1) champ (1) didactique (1) comparaison (1) Comparison (1) Middle school students (1) Value (1) Teaching (1) Teachers--Training of (1) Students (1) Student teachers (1) Reasoning (1) Proportion (1) Middle schools (1) Mathematics teachers (1) Inference (1) Authors (1) Mathematics (1) Students (1)