“…In order to develop such proficiency, "teachers should know ways to use mathematical drawings, diagrams, manipulative materials, and other tools to illuminate, discuss, and explain mathematical ideas and procedures" ( [63], p. 33). In Chile, mathematics teachers are expected to "use representations, call on prior knowledge, put forward good questions, and stimulate an inquisitive attitude and reasoning among students" ( [64], p. 37). In Australia, mathematics teachers know how to motivate "curiosity, challenge students' thinking, negotiate mathematical meaning and model mathematical thinking and reasoning" ( [65], p. 4).…”