AngLegsTM come in six lengths that easily snap together to motivate students to explore plane geometry on their desktop or the overhead projector. Students will discover what happens as they use the same length legs verses different length legs to build various polygons, as they attach additional legs they study polygon heights, calculate their areas, find center points and much more! When two AngLegsTM of any length are snapped onto the special 4" protractor students will explore angles, add a third leg for triangles, a forth for quadrilaterals, and so on. This 74-piece set consists of 72 AngLegsTM12 each of six different lengths in six colors and two snap-on View ThruTM protractors. This exciting new manipulative includes a set of 15 activity cards, divided into three sections for grades K-2, 3-5 and 6-8. All activities adhere to the NCTM Standards for geometry.