Year 3 - Maths
Construct quadrilaterals with and without parallel and perpendicular sides
Parallel and perpendicular sides in polygons
Study Hub
Study Guides
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 investigate ways to compose and decompose polygons. They will investigate quadrilaterals with and without parallel and perpendicular sides.
Lesson Summary
You will learn to use equipment to construct and compare quadrilaterals with and without parallel and perpendicular sides.
Key Notes
- Construction strips allow you to create different polygons.
- Lines are perpendicular when they are at right angles to each other.
- Lines are parallel because they are always the same distance apart.
Vocabulary To Learn
- Polygon: A polygon is a 2D shape made up of three or more straight lines.
- Perpendicular: Two lines which meet at a right angle are perpendicular.
- Parallel: Parallel lines are straight lines that are always the same distance apart. They never get closer together or further apart.
Common Mistakes To Avoid
- Pupils may find it challenging to identify specific quadrilaterals e.g. trapeziums when making them out of construction sticks as it can be harder to see the properties.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Construction strips allow you to create different polygons. Lines are perpendicular when they are at right angles to each other.
2. Use this key word in a maths sentence and explain it clearly. 'Polygon'
A polygon is a 2D shape made up of three or more straight lines. 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 find it challenging to identify specific quadrilaterals e.g. trapeziums when making them out of construction sticks as it can be harder to see the properties. Correction: Using a ruler to draw the shape, using the inside of the construction sticks, can support pupils in seeing and identifying the key properties to help them classify a quadrilateral.
More Lessons In This Unit
- Draw polygons on isometric paper Study Guide
- Draw shapes with given properties Study Guide
- Draw shapes with given properties on a range of geometric grids Study Guide
- Identifying parallel lines Study Guide
- Investigate different ways of decomposing a polygon Study Guide
- Make and draw quadrilaterals on circular geoboards Study Guide
- Make and draw shapes with and without parallel and perpendicular sides Study Guide
- Make and draw triangles on circular geoboards Study Guide
- Make shapes by joining two polygons in different ways Study Guide
Browse all guides in the Year 3 Maths guide library.