LEARNING OBJECTIVE: To understand what is meant by area and to work out how to quickly find the area of a rectangle
SUCCESS CRITERIA: You will be able to explain what area is and be able to work out the area of any rectangle given its width and length. Some of you will also be able to work out a length (or width if you know the area.
STARTER: Square it Game on paper in Pairs. Use this Onscreen Version of the game to demonstrate the rules. ON the dotty paper provided divide into grids that are 7 dots by 7 dots. And play the game a few times with another student. If you think you can beat the computer. Come up and have a go in the IWB
LESSON: Work through this Mymaths Lesson on Area of a rectangle.
Copy and complete all the gaps in the following table in the following table
Length | Width | Area | Perimeter |
5m | 3m | 15m2 |
|
7cm | 9cm | 63m2 |
|
13cm | 11cm | 143m2 |
|
6.5m | 3.2m | 20.8m2 |
|
3.7cm | 5.6cm | 20.72m2 |
|
1.5m | 25cm | 37.5m2 |
|
|
|
|
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5m | 12m | 60m2 |
|
7m | 8cm | 56cm2 |
|
25cm | 80cm | 2m2 |
|
Check answers and Discuss results. Especially where units differ!!
EXTENSION: Fill in the final column which is the Perimeter of each rectangle
PLENARY: Checking answers, Use traffic light cards from planners to show confidence on finding area of a rectangle.
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