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Pie Charts and Line Graphs: A Day at the Great Graph Fair

Pie Charts and Line Graphs: A Day at the Great Graph Fair

Learn to read and draw pie charts and line graphs, then solve problems with them as you visit six stalls at a summer fair with Dot the owl.

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What you'll learn

  • Read values on a line graph, including between the plotted points
  • Choose an even scale and plot points to draw a line graph
  • Compare two lines and use a miles-to-kilometres conversion graph
  • Work out how many each pie chart slice stands for
  • Know a whole pie chart is 100% and 360°
  • Calculate pie chart angles and measure them with a protractor

Chapter by chapter

  1. Reading line graphs: scales, axes and values between points Free to try

    Year 6 maths · 1

  2. Drawing line graphs: choosing an even scale and plotting points

    Year 6 maths · 1

  3. Solving problems with line graphs: two lines and conversion graphs

    Year 6 maths · 1

  4. Reading pie charts: using fractions of the total

    Year 6 maths · 1

  5. Reading pie charts with percentages and angles

    Year 6 maths · 1

  6. Drawing pie charts: working out angles and using a protractor

    Year 6 maths · 1

  7. Grand Graph Fair Challenge (10 questions)

What the chapters cover in the national curriculum in England:

  1. Year 6 maths: Interpret and construct pie charts and line graphs and use these to solve problems

About this adventure

Pie Charts and Line Graphs is an interactive maths game that teaches children aged 10–11 how to read, draw and solve problems with pie charts and line graphs, following the Year 6 national curriculum.

Players drag a reading ruler along a temperature graph, plot a sunflower's growth week by week and compare two hot air balloons on one graph. They use a conversion graph to change miles into kilometres. At the pie stalls they work out what each slice stands for using fractions, percentages and angles. Then they draw their own pie chart by dividing 360° by the total and measuring each angle with an on-screen protractor.

Dot the owl reads every instruction aloud and gives a hint after a wrong answer, aimed at the exact mistake. Two optional warm-ups refresh reading scales and fractions of amounts, and a 10-question final challenge checks everything.

Questions and answers

How do you read a pie chart?

Work out what fraction of the circle a slice is, then find that fraction of the total. For example, if 24 people were asked and a slice is a quarter, it stands for 24 ÷ 4 = 6 people.

How do you work out the angles for a pie chart?

Divide 360° by the total to find the angle for one item, then multiply by each group's amount. If 18 children vote, each child is 360 ÷ 18 = 20°, so 6 votes make a 120° slice. The angles should add up to 360°.

When should you use a line graph instead of a pie chart?

Use a line graph when something changes smoothly, such as temperature or height over time, because the points in between have meaning. A pie chart is better for showing how a whole is split into separate groups, such as favourite flavours.

What age is this pie charts and line graphs game for?

It is written for children aged 10–11 in Year 6, where pie charts and line graphs are taught in the statistics part of the national curriculum. Older children revising for KS2 SATs can also use it.

What does the game include and how long does it take?

It has six chapters, two optional warm-ups and a 10-question final challenge, taking about an hour to play in full. Each chapter takes around 8–10 minutes, so it can be played in short sessions.

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