Lesson 61 Learning Objectives:
Calculate the perimeter of polygons with given side lengths
Select the most appropriate unit for measuring the perimeter of a given polygon and justify the answers
Estimate and measure perimeter in centimeters and millimeters, using a variety of tools
Develop a formula for finding the perimeter of rectangles
Use the relationship between side lengths and perimeter to find perimeter or missing side lengths
Math Talk:
See Math Talk image below
Polypad:
Polygons and Measuring Tools
(use both at the same time to play with measuring the perimeter of shapes)
Reflect:
Reflect in your math journal. Draw, create or write to share your thinking. See Lesson 61 guide for more reflection questions, real life anchoring, playful explorations and creative invitations.
If two shapes have the same perimeter, do they have to be the same shape? Explain your reasoning
Create two rectangles with the same perimeter but different side lengths
What happens to perimeter if one side grows but the others stay the same? Describe a scenario where this might happen
How is perimeter like belonging?
Math Talk:
Have a conversation about this image. Be curious. Be creative. Can you see in different ways?
What polygons do you notice? How might you use this map to measure the perimeter of the field in cm or mm?
The buildings? The garden? The playground?
How might an architect or landscape designer use this map and measurements in cm or mm to measure a space for a new classroom or play space?
Google Maps, 2505 Smith Rd, Courtenay, BC
