Would you rather have a bowl of dimes or a bowl of quarters? A video introduces the problem by presenting two bowls, one full of quarters and another full of dimes. Learners use information from a CoinStar receipt to calculate the number of dimes and quarter cashed in. The results just might surprise you!

Concepts

systems of equations, systems of linear equations, money, solving systems by graphing

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Additional Tags

math

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Instructional Ideas

• Incorporate the lesson as a performance task assessment
• Make predictions about the amount of money in each bowl before any calculations

Classroom Considerations

• Requires pupils to solve for two unknowns

Pros

• The solution to the problem is surprising and difficult to predict
• Provides additional resources to continue the lesson

Cons

• None

Common Core

8.EE.C.8.b