Collaborative Circles Casting School Geometry in a New Light with Dynamic Geometry Software

摘要

Edwards describes a series of activities and "conversation starters" that he used with secondary school students to promote an alternate vision of geometry that involves more than "memorizing formulas" or "writing two-column proofs." The series of questions, which he refers to collectively as the "Two Clocks Problem," encourages students to construct their own conjectures and hypotheses about locus points and function plots.