Year 9 - Maths
Understanding advertising
Thinking critically with maths
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Unit Summary
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Lesson Summary
You will learn to analyse promotions and marketing claims.
Key Notes
- Promotions do not always offer the best value for money.
- Advertisements often use data to make their point.
- The validity of the data and conclusions should not be assumed.
Vocabulary To Learn
- Proportion: Proportion is a part to whole (sometimes part to part) comparison.
- Unit: A unit is one of something that defines the 'one' you are counting in.
Common Mistakes To Avoid
- Pupils may think that it is always best to buy a 'deal' as deals are always a good thing.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Promotions do not always offer the best value for money. Advertisements often use data to make their point.
2. Use this key word in a maths sentence and explain it clearly. 'Proportion'
Proportion is a part to whole (sometimes part to part) comparison. 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 think that it is always best to buy a 'deal' as deals are always a good thing. Correction: Throughout the lesson it is demonstrated that a deal or promotion may not always be right for every customer. Is a deal worth it if you don't need to buy that much?
More Lessons In This Unit
Browse all guides in the Year 9 Maths guide library.