Rethinking Proof With the Geometer's Sketchpad

Whilst some of us call for geometry to be better represented in the curriculum both here in Scotland and elsewhere, usually citing as the reason the need for students to focus on proof, Michael de Villiers takes the argument onto another plane. He explores the nature of proof and shows how, with the aid of a dynamic geometry software package such as Geometer’s Sketchpad , the learner can come to an understanding of the various roles of proof in mathematics.