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Year 8 - Maths

Checking understanding of pictograms and bar charts

Graphical representations of data

Unit Summary

In this unit pupils will interpret and construct a range of representations of data including bar charts, pie charts and scatter graphs.

Lesson Summary

You will learn to interpret both pictograms and bar charts.

Key Notes

  • Pictograms represent data through images.
  • Bar charts represent data using the heights of bars.
  • A key and/or labelled axes are important for interpreting the representation.

Vocabulary To Learn

  • Frequency: The number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.

Common Mistakes To Avoid

  • Pupils may forget the key with a pictogram or mislabel the vertical scale for bar charts.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Pictograms represent data through images. Bar charts represent data using the heights of bars.

2. Use this key word in a maths sentence and explain it clearly. 'Frequency'

The number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property. 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 forget the key with a pictogram or mislabel the vertical scale for bar charts. Correction: By asking the pupils how they know there are 'x things', to highlight the need for the key.

More Lessons In This Unit

Browse all guides in the Year 8 Maths guide library.