Starter quiz
- Match the pairs of numbers with a product 40.
- 5⇔8 ✓
- 1⇔40 ✓
- 4⇔10 ✓
- 2⇔20 ✓
- Which of these shapes are compound shapes?
- A
- B ✓
- C
- D ✓
-
- Look at this rectilinear compound shape. It is made up of 6 squares. Calculate the total area of the shape. A = ______ cm².
- '54' ✓
- This image is of the flag of Romania. It consists of three rectangles of equal size. Calculate the total area of one rectangle. A = ______ cm².
- '48 ' ✓
- Calculate the area of this compound rectilinear shape. A = ______ cm².
- '73' ✓
- Choose an efficient method to calculate the area of this compound shape. A = ______ cm².
- '36' ✓
Exit quiz
- This rectangle has an area of 30 cm². Match the dimensions that would give this area.
- 5 cm⇔6 cm ✓
- 10 cm⇔3 cm ✓
- 2cm⇔15cm ✓
- 1cm⇔30 cm ✓
- The area of a rectangular carpet is 40 m². One dimension is 8 m. What is the other dimension? ______ m.
- '5 ' ✓
- Look at rectangles A and B. Which of the statements is correct?
- The area of rectangle A is equal to the area of rectangle B.
- The area of rectangle A is greater than the area of rectangle B. ✓
- The area of rectangle B is greater than the area of rectangle A.
-
- A square white paving slab has been placed on a square garden lawn. What is the area of lawn that can be seen? A = ______ m².
- '364 ' ✓
- A small square is shown inside a larger rectilinear shape. Choose an efficient method to calculate the area of the rectilinear shape. A = ______ cm².
- '108' ✓
- Choose an efficient method to calculate the area of the rectilinear shape. A = ______ cm²
- '100 ' ✓
Worksheet
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Presentation
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Lesson Details
Key learning points
- To find the area of a rectangle you multiply the length by the width.
- Compare different methods to decompose shapes and decide which is the most efficient.
- Choose the most efficient calculation strategies to calculate the area of a compound rectilinear shape.
Common misconception
Pupils may think that there is only one possible answer to some problems or only one way to solve a problem.
Discuss whether there is only one possible answer to a problem or if there are many solutions. Ensure that more than one approach to solving a problem is modelled where appropriate.
Keywords
Dimension - A dimension is a measure of length in one direction.
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