Unit 1, Lesson 21, Grade 3 icon
Unit 1, Lesson 21

Use given side lengths in standard units to find the perimeters of polygons

North Carolina Department of Public Instruction 60 min(s)

By the end of the lesson students will be able to find the perimeter of a polygon given the side lengths. Materials: Pattern blocks, Opening problem sheet, Pedaling for Pennies sheet, calculators, Error Analysis sheet. Present the Opening Problem: Gina is entering a bike race to raise money for the local animal shelter. How much money will she collect if she completes the race by riding the route one time?

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