Year 3 - Maths
Know that a square is a rectangle in which the four sides are of equal length
Right angles
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will rotate 2 lines around a fixed point to make different angles. They identify vertices and describe half, quarter and three-quarter turns in terms of right angles.
Lesson Summary
You know a square is a rectangle in which all four sides are of equal length.
Key Notes
- The definition of a square is a rectangle with all four sides the same length.
- A square has four right angles at its vertices.
- A square can rest on a side or a vertex.
Vocabulary To Learn
- Rectangle: A rectangle is a 2D shape with four straight sides and four right angles.
- Square: A square is a 2D shape with four equal straight sides.
Common Mistakes To Avoid
- Pupils may not realise that squares are rectangles.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The definition of a square is a rectangle with all four sides the same length. A square has four right angles at its vertices.
2. Use this key word in a maths sentence and explain it clearly. 'Rectangle'
A rectangle is a 2D shape with four straight sides and four right angles. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils may not realise that squares are rectangles. Correction: Emphasise to pupils that all squares are rectangles but not all rectangles are squares. Rectangles are quadrilaterals with 4 right angles, but squares have 4 sides of equal length.
More Lessons In This Unit
- Identify and describe right angles Study Guide
- Identify properties of quadrilaterals Study Guide
- Identify properties of triangles Study Guide
- Investigate and draw other polygons with right angles Study Guide
- Investigate the shapes made when rectangles are cut on the diagonal Study Guide
- Join four right angles at a point using different right-angled polygons Study Guide
- Know that a rectangle is a four-sided polygon with four right angles Study Guide
- Know that a right angle describes a quarter turn Study Guide
- Make different sized angles by rotating two lines around a fixed point Study Guide
Browse all guides in the Year 3 Maths guide library.