"The Great Circle Race"

Solution Summary

• Which team will win the heat, and can it beat the best time?

To solve The Great Circle Race students need to interpret a topographic map, correctly draw the legal race area on the map, interpret data about the speed of various non-motorized vehicles, and use compass clues to determine racers' starting locations and routes. Building on skills introduced in The Right Angle, this episode involves angle and linear measurement, use of bearing guides and topographic map reading. In addition students learn about triangulation and circle measurement. Many teachers report more success with this adventure after students have some knowledge of basic angle measurement.