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Why Is Rubber Used to Build Race Cars?
Is Lesson Plan Physical Science Elementary Grade 2
Sensemaking Checklist
Lesson Overview
Students investigate how easily objects made of rubber, plastic, and metal slide along a surface. While students quickly figure out that NASCAR race car tires need to stick to (grip) the track to keep the car from sliding around the turns, they wonder why the tires need treads (structure). Students investigate how treads affect the motion of a rubber object and use their observations to determine the function of treads.
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Materials
Rubber Investigation Materials—Teacher Demonstration
- 1 metal baking pan - 1 coin - 1 plastic bottle cap - ½ rubber eraser—smooth
- 1 metal baking pan - ½ rubber eraser—smooth - ½ rubber eraser—cut with tread - 1 small cup of water
- 1 box cutter - 1 pen
Materials for Posters or Writing on the Board
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