Rectangle Perimeter Demonstration This resource provides animated demonstrations
- Slides: 14
Rectangle – Perimeter – Demonstration This resource provides animated demonstrations of the mathematical method. Check animations and delete slides not needed for your class.
Using fencing, Geoff builds a pig pen & a sheep pen on his farm. What are the shapes called? How many metres of fencing did it take to build each pen? 1 m 8 m of fencing 14 m of fencing
The perimeter of a shape is the distance around its edge. Can you think of a method to measure the perimeter of this rectangle? 1 cm
To measure the perimeter, we can imagine a tiny person walking around the edge. 4 cm 1 cm 2 cm 4 cm Total = 12 cm
To measure the perimeter, we can imagine a tiny person walking around the edge. 1 cm 4 cm 3 cm 4 cm Total = 14 cm
To measure the perimeter, we can imagine a tiny person walking around the edge. 1 cm 5 cm 2 cm 5 cm Total = 14 cm
To measure the perimeter, we can imagine a tiny person walking around the edge. 1 cm 6 cm 4 cm 6 cm Total = 20 cm
How can we find the perimeter of this rectangle? We know the opposite sides of a rectangle are equal 6 cm 2 cm 6 cm Total = 16 cm
How can we find the perimeter of this rectangle? We know the opposite sides of a rectangle are equal 6 cm 5 cm 6 cm Total = 22 cm
How many rectangles can you draw that all have a perimeter of 16 cm? 1 cm
How many rectangles can you draw that all have a perimeter of 18 cm? 1 cm
How many rectangles can you draw, that all have a perimeter of 24 cm? 1 cm
Find the perimeter of each rectangle. Drawings not to scale. 1 cm 4 cm A 12 cm 14 cm D 20 cm 6 cm E 7 cm B 22 cm C 9 cm 4 cm 18 cm F 7 cm 32 cm
Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk