Materials List:
A Merry-Go-Round for Dirty Air
https://www.teachengineering.org/activities/view/cub_air_lesson10_activity3
Each student needs:
- 1 small paper cup (or Dixie cup)
- a dab of petroleum jelly (Vaseline)
- 1 teaspoon black pepper
- 1 pencil or pen
- paper towels (for cleaning petroleum jelly from fingers)
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