Discusses a simple procedure for determining our exact location on Earth based on the motion of celestial bodies and latitude and longitude. This hands-on activity requires students to design and construct an apparatus that will produce accurate measurements. The materials required are a knitting needle, a tape measure, and a sunny day. (AIM)

To help students appreciate the real-life application of geometric constructions, two activities are presented applying boundary lines in geography. Geometric concepts are integrated with other disciplines by giving students historical information, maps, and activity sheets to study the Delaware-Pennsylvania border and the District of Columbia's…