Solve several sample problems together, using similar triangles. Relate similar geometric triangles to the relationship between and person or object and its shadow. Divide students into groups of three or four. Hand out materials. The groups proceed to various predetermined objects on the playground - basketball hoop pole, flag pole, tether ball pole, etc., measuring the shadow of each object in centimeters, and recording the information on their activity sheets.
Groups compare their findings with other groups' findings.
Discuss possible causes Session 3 1. Math Station 1. Follow procedures for playground activity, this time measuring the shadow cast by Pompey's Pillar, and solving the proportion to determine the approximate height of the pillar. Technology Applications Student groups develop HyperStudio stacks to demonstrate their findings, and understanding of the mathematics involved in the project. Evaluation Student observations reflect group participation, correct use of measuring devices, completion of project.