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There's no need to have friction among instructors regarding the resource. Pupils investigate how marbles and coins slide along different surfaces which gives them information to estimate coefficients of friction.
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Instructional Ideas
- Have older learners calculate coefficients of friction for different surfaces
Classroom Considerations
- Some prior preparation is necessary (freezing water in a cookie sheet)
- Activity requires a variety of materials and surfaces
Pros
- Lists questions to use in discussion
- Very detailed instructions
Cons
- None