Activity
Texas Instruments

Texas Instruments: Going in Circles Inscribed Angles

For Teachers 9th - 10th Standards
This lesson has students discover properties of inscribed angles in a circle. Students use the Geometer's Sketchpad application for the TI-89 to construct a circle and an inscribed angle.
Website
University of Regina (Canada)

University of Regina: Math Central: Lesson: Mr. Z's 5 Minute Game of Geometric Pandemonium

For Teachers 3rd - 5th Standards
Students make a series of geometric drawings of points, obtuse angles, rays, polygons, and the like. Each child is given one but not allowed to show anyone else. The drawing is then taped to the back of the child in front of them. The...