was developed at the University of Georgia to support middle school teachers in their instruction of mathematics. On this particular page you’ll find investigation of circles, quadrilaterals, triangles, polygons, and 3-D objects. Each section includes many recommended sample problems, extended learning problems, and information about how the sections reflect state and national standards. There is also a very complete interactive dictionary for teachers, students, and parents. The Constructionary is an interactive that shows how to construct various geometric principles on the Geometric Sketch Pad.