# perimeter

3
11

## delayl

Updated 5 months ago

1. Drawings
450 seconds
What is the definition of perimeter?
2. Slide
60 seconds
The perimeter of a shape is its total length around the outside It is the sum of all sides of a shape It can be used to calculate the area of a shape
What is the Perimeter of a Shape?
3. Slide
60 seconds
shape: A two-dimensional object made up of lines and curves that is closed. perimeter: The length around the outside of a shape. area: The space inside the boundaries of a shape.
Concepts:
4. Slide
60 seconds
The word 'perimeter' comes from a Greek word meaning 'around the measure'. The perimeter of a circle is called its circumference. The perimeter of a rectangle can be found by adding all 4 sides together.
Fun facts:
5. Open question
660 seconds
Work together in pairs: What did you find most interesting about learning about perimeter today?
6. Open question
660 seconds
Work together in pairs: Explain why knowing the perimeter of a shape is important in everyday life.
7. Drawings
450 seconds
Brain break: Draw a picture of a robot riding a roller coaster!
8. Poll
300 seconds
What is the formula to calculate the perimeter of a rectangle?
• Area = Length * Width
• Perimeter = 2 * Length + 2 * Width
• Perimeter = Length + Width + Length + Width
• Perimeter = Length * Width
9. Poll
300 seconds
What is the perimeter of a rectangle with a length of 6 cm and a width of 4 cm?
• 14 cm
• 12 cm
• 24 cm
• 10 cm
10. Poll
300 seconds
What is the formula to calculate the perimeter of a triangle?
• Perimeter = Length + Width + Height
• Area = Base * Height
• Perimeter = Length + Width + Length
• Perimeter = a + b + c
11. Poll
300 seconds
What is the perimeter of a triangle with sides of length 8 cm, 6 cm, and 10 cm?
• 24 cm
• 18 cm
• 16 cm
• 30 cm
12. Poll
300 seconds
What is the perimeter of a square with a side length of 6 cm?
• 24 cm
• 18 cm
• 12 cm
• 30 cm