Year 10 - Maths
Checking and securing understanding of drawing accurate scaled diagrams
Bearings
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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 apply their knowledge of angles in order to calculate bearings and solve angle problems within the context of bearings.
Lesson Summary
You will learn to draw an accurate scaled diagram using a suitable choice of scale.
Key Notes
- Given the real measurements, a suitable scale factor can be chosen.
- The scale factor should mean the scaled diagram is easy to draw accurately.
- The scale factor can be determined by the units.
- The scale factor used should always be clearly written next to the scaled diagram.
Vocabulary To Learn
- Scale factor: A scale factor is the multiplier between similar shapes that describes how large one shape is compared to the other.
- Degree of accuracy: A degree of accuracy shows how precise a number or measurement is.
Common Mistakes To Avoid
- Misinterpreting a scale, particularly if given with no units.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Given the real measurements, a suitable scale factor can be chosen. The scale factor should mean the scaled diagram is easy to draw accurately.
2. Use this key word in a maths sentence and explain it clearly. 'Scale factor'
A scale factor is the multiplier between similar shapes that describes how large one shape is compared to the other. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Misinterpreting a scale, particularly if given with no units. Correction: Encourage pupils to carefully convert the scale into a more useful scale. E.g. writing 1 : 20 0000 as 1 cm = 2 km.
More Lessons In This Unit
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