Year 4 - Maths
Translate polygons in the first quadrant
Coordinates
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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 give directions from one position to another on a grid and move objects including polygons on a grid according to directions, and mark the new position. They will describe and draw polygons specified by translations.
Lesson Summary
You will learn to translate polygons in the first quadrant.
Key Notes
- Move the point in the horizontal direction in the translation.
- Move the point in the vertical direction in the translation,
- The shape made with the new points should be exactly the same shape and size as the original shape.
Vocabulary To Learn
- Vertex / vertices: A vertex is the point where two or more lines meet. The plural is vertices.
- Translate: Translation is a transformation in which every point of a shape moves the same distance in the same direction.
Common Mistakes To Avoid
- Pupils might mistakenly alter the shape or size of the polygon during translation, thinking the process involves resizing or reshaping.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Move the point in the horizontal direction in the translation. Move the point in the vertical direction in the translation,.
2. Use this key word in a maths sentence and explain it clearly. 'Vertex / vertices'
A vertex is the point where two or more lines meet. The plural is vertices. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Pupils might mistakenly alter the shape or size of the polygon during translation, thinking the process involves resizing or reshaping. Correction: Emphasise that translation is a "sliding" motion that moves the shape without changing its size or orientation. Demonstrate this with cut-out shapes that can be physically moved on a grid, showing that the shape remains identical after translation.
More Lessons In This Unit
- Complete polygons with missing coordinates Study Guide
- Describe translations of polygons drawn on a square grid Study Guide
- Draw polygons specified by coordinates in the first quadrant Study Guide
- Draw polygons specified by translations Study Guide
- Give directions from one position to another on a grid Study Guide
- Mark the position of points specified by coordinates in the first quadrant of a coordinate grid Study Guide
- Move objects including polygons on a grid according to directions and mark the new position Study Guide
- Solve problems involving marking and translating points in the first quadrant on a coordinate grid Study Guide
- Write coordinates for already marked points in the first quadrant of a coordinate grid Study Guide
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