Know that a rectangle is a four-sided polygon with four right angles
I can identify a rectangle as a four-sided polygon with four right angles.
Know that a rectangle is a four-sided polygon with four right angles
I can identify a rectangle as a four-sided polygon with four right angles.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- A polygon is a 2D shape made up of 3 or more sides.
- A rectangle is a 4-sided polygon with 4 right angles.
- A 4-sided shape with fewer than 4 right angles is not a rectangle.
- A right angle is marked with a symbol inside the angle.
Keywords
Polygon - A polygon is a 2D shape made up of 3 or more straight sides.
Rectangle - A rectangle is a 2D shape with four straight sides and four right angles.
Common misconception
Pupils need to look at the interior angles in the shape. They may think that an interior angle of 270° is a right angle.
Explain to pupils that we need to measure the interior angles of a shape. Show them examples of this (e.g. an arrowhead) to illustrate.
To help you plan your year 3 maths lesson on: Know that a rectangle is a four-sided polygon with four right angles, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 3 maths lesson on: Know that a rectangle is a four-sided polygon with four right angles, 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 Right angles unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Equipment
Pupils may need access to the following resources: right angle measurers, mirrors, rulers and scissors.
Licence
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
