Explain how to calculate the area of a rectangle using multiplication
Lesson details
Learning outcome
I can explain how to use multiplication to calculate the area of a rectangle.
Key learning points
- The area of a rectangle is similar to an array for multiplication.
- Times table knowledge helps you to calculate the area of a rectangle.
- To find the area of a rectangle you multiply the length by the width.
Keywords
Array - Items (including numbers) arranged in columns or rows are called arrays.
Length - Length is the distance from one point to another.
Width - Width is the distance from side to side.
Common misconception
Some pupils may still not have the automaticity of times tables facts useful for this lesson.
Pre-teaching some tricky times tables facts by using counters for arrays will be useful. Consider allowing scaffolds within the lesson.
Teacher tip
One of the slides shows a teacher using a piece of paper, cut to size, hiding all of the squares on an array apart from the length and the width. Regular practice outside of the lesson using different arrays will help to reinforce the learning.
Licence
except where otherwise stated. See Oak's terms & conditions (Collection 2).Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.9 × 8 = .
Q2.Match the array with times tables facts.
a
b
c
d
Q3.Which times table fact is being shown here?
Q4.True or false? This shape has an area of three square metres.
Q5.Which of these statements are true for a square?
Q6.Match each parts of the rectangle to the correct letter.
a
b
c
Assessment exit quiz
6 Questions
Q1.Which of these rectangles has the dimensions correctly labelled ?
Q2.What is the area of this shape? cm²
Q3.What is the area of this shape? cm²
Q4.What is the area of the shaded shape? cm²
Q5.What is the area of this shape? cm²
Q6.Order the shapes by area, starting with the smallest area.
To help you plan your 5 maths lesson on: Explain how to calculate the area of a rectangle using multiplication, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 5 maths lesson on: Explain how to calculate the area of a rectangle using multiplication, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 2 maths lessons from the Link area of rectangles to multiplication unit, dive into the full primary maths curriculum, or learn more about lesson planning.