Lesson Plan

Serc: Investigating Isotopes and Average Atomic Mass Using Pennies

Curated by ACT

In this activity, students apply what they have learned about weighted averages, isotopes, and systems of equations to a new situation - coins in a sealed container. They learn some historical information regarding the composition of pennies and then are faced with a challenge: to determine the number of pre-1982 and post-1982 pennies that are contained in a sealed container without opening the container.

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Classroom Considerations
  • Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional|practice