The Greedy Triangle

posted Mar 7, 2013, 8:19 AM by Patrick Johnson

Students are learning to sort and classify various polygons by their geometric properties (the difference between grade 1 and 2 expectation is that grade 2 the properties refer specifically to sides and vertices). Students watched the story of the Greedy Triangle and used a geoboard to make the shapes in the story. They started with a triangle and then kept on adding one side and one angle to make other geometric shapes.

Afterwards we completed this smartboard activity (PDF) about the story.