A resource that makes for excellent group work as students explore the area and perimeter of different complex designs made up of squares and circles. The commentary gives a clear definition of perimeter, but suggests that group members discuss for themselves what is meant by perimeter of the designs, a mathematical practice, making sense of the problem and persevering in solving it.

Additional Tags

circumference and area of a circle, math

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Pros

• Conducive to small-group work
• Encourages collaboration

Cons

• None

Common Core

7.G.B.4