Knowledge_On-The-Go_Grade-3Grade 3 Module 7 Lesson 14

How can we find the perimeter when side lengths are unknown? In this lesson, Ms. Roose solves for perimeter of shapes by reasoning to find unknown side lengths. For this lesson, you will need a paper with pencil. If you have access to a workbook, or a printer, we also suggest using the Problem Set available using the link below the video.





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