Reason about shapes using the relationship between side lengths and area and perimeter
I can reason about shapes using the relationship between side lengths and area and perimeter.
Reason about shapes using the relationship between side lengths and area and perimeter
I can reason about shapes using the relationship between side lengths and area and perimeter.
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Lesson details
Key learning points
- Area and perimeter are calculated from the side lengths of 2D shapes.
- Area is measured in square units.
- Perimeter is measured in units of length.
Keywords
Area - Area is the measurement of a flat surface and measures 2D space.
Perimeter - The distance around a 2D shape is its perimeter.
Common misconception
Area and perimeter are easily confused. In this lesson, both concepts are explored, often at the same time.
Use your knowledge of the pupils' attainment (including using the Starter Quiz) to see which pupils are confusing the terms. All pupils will benefit from access to a working wall which gives a clear reminder of which is which.
To help you plan your year 6 maths lesson on: Reason about shapes using the relationship between side lengths and area and perimeter, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 6 maths lesson on: Reason about shapes using the relationship between side lengths and area and perimeter, 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 Draw, compose and decompose shapes unit, dive into the full primary maths curriculum, or learn more about lesson planning.
Licence
Prior knowledge starter quiz
6 Questions
Q1.What is the inverse of × 4?
Q2.Which of these are factors of 12?
Q3.What is the perimeter of this shape? Remember to use the correct unit of measure.

Q4.A square has side lengths of 75 mm. What is its perimeter? mm
Q5.A rectangle has side lengths of 17 cm and 4 cm. Its area is cm².
Q6.What is the area of this square? cm²

Assessment exit quiz
6 Questions
Q1.This square road sign has a perimeter of 120 cm. What is the length of one side? cm

Q2.What is the missing dimension of the rectangle which has an area of 104 cm² and one known side of 8 cm? cm

Q3.The smaller rectangle has sides of 7 cm and 3 cm. The larger rectangle is composed of two of the smaller rectangles. What is the perimeter of the larger rectangle? Remember to use the correct unit.

Q4.The square has an area of 64 cm². It is decomposed into four congruent rectangles. What is the perimeter of one of the small rectangles? Remember to use the correct unit.

Q5.The larger rectangle is composed of two of the smaller rectangles. What is the area of the larger rectangle? cm²

Q6.The larger rectangle is composed of the smaller rectangles. What is the area of the larger rectangle? cm²
