# Perimeter

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## mhi

Updated 5 months ago

1. Word cloud
120 seconds
What is the basic definition of perimeter?
2. Slide
60 seconds
"Calculate the perimeter and select appropriate units of length" Success Criteria: I can define perimeter I can calculate perimeter I can choose appropriate units of measurement for specific situations
Learning objective:
3. Word cloud
90 seconds
Perimeter - When will I use it?
4. Slide
60 seconds
Perimeter is the distance around a 2D shape. It can be found by adding up the length of each side of a shape. It is used to measure the size of a shape.
Perimeter - What is it and how it works
5. Open question
120 seconds
How do we find the perimeter of a triangle?
6. Open question
120 seconds
How do we find the perimeter of a square?
7. Open question
120 seconds
How do we find the perimeter of a rectangle?
8. Open question
120 seconds
How do we find the perimeter of a quadrilateral?
9. Open question
120 seconds
How do we find the perimeter of a circle?
10. Slide
60 seconds
Ancient Egyptians used ropes with knots to measure the perimeter of fields. The Great Wall of China is 21,196 km long, making it the longest man-made structure in the world. The circumference of the Earth is 40,075 km.
Fun facts:
11. Open question
660 seconds
Work together in pairs: Given a rectangle with a length of 10 cm and a width of 6 cm, what is the perimeter of the rectangle in cm?
12. Open question
660 seconds
What units of measurement would you use to measure the perimeter or circumference of the following: - Hokey Oval - Table - Pencil - House
13. Drawings
450 seconds
Brain break: Draw a picture of a giant elephant balancing on a beach ball!
14. Poll
300 seconds
What is the perimeter of a square with sides of 3 cm?
• 9 cm
• 6 cm
• 12 cm
• 8 cm
15. Poll
300 seconds
What is the perimeter of a rectangle with sides of 4 cm and 5 cm?
• 13 cm
• 14 cm
• 18 cm
• 20 cm
16. Poll
300 seconds
What is the perimeter of a triangle with sides of 2 cm, 3 cm, and 4 cm?
• 9 cm
• 10 cm
• 12 cm
• 14 cm
17. Poll
300 seconds
What is the perimeter of a circle with a diameter of 6 cm?
• 36 cm
• 18 cm
• 12 cm
• 9 cm
18. Poll
300 seconds
What is the perimeter of an octagon with sides of 3 cm?
• 24 cm
• 18 cm
• 27 cm
• 36 cm