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Year 8 - Maths

Constructing bar charts by utilising technology

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 construct bar charts from data using technology.

Key Notes

  • Bar charts can be constructed quickly using spreadsheets.
  • Bar charts can be constructed quickly using Desmos.
  • A template file can be used to make bar chart creation quick and easy.

Vocabulary To Learn

  • Frequency: The frequency is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.
  • Bar chart: A bar chart (bar graph) is a graph consisting of bars visually representing the frequency of objects or groups.
  • Data: Data are a collection of information.

Common Mistakes To Avoid

  • Pupils may select additional cells which will cause their chart to look strange.

3 Quick Questions (With Answers)

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

Bar charts can be constructed quickly using spreadsheets. Bar charts can be constructed quickly using Desmos.

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

The frequency is 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 select additional cells which will cause their chart to look strange. Correction: They can edit the data selected or delete the chart and start again.

More Lessons In This Unit

Browse all guides in the Year 8 Maths guide library.