Unit 1, Lesson 20, Grade 3 icon
Unit 1, Lesson 20

Use given side lengths to find the perimeters of polygons

North Carolina Department of Public Instruction 54 min(s)

By the end of the lesson students will be able to find the perimeter of a polygon given the side lengths. Prior Knowledge Needed: Introduction to perimeter, properties of squares and rectangles, recognizing lines of symmetry in a figure. Materials Opening problem sheet, Robotic Racing sheet This lesson transitions students from counting pattern blocks or squares on a grid or to finding the perimeter by adding side lengths. Students are to use the given side lengths to determine the paths that Jane's class could use for each round of the competition.

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