Grasp Maths

Year 3

Interpret and present data using bar charts, pictograms and tables

Read and organise data shown in simple tables, pictograms and bar charts.

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Lesson overview

Statistics

Data can be organised in different ways. Tables list information clearly, pictograms use repeated symbols, and bar charts compare values using bars. We can read each type carefully to find facts and compare amounts.

Read a table

A table helps us see each category and its value clearly.

FruitVotes
Apple6
Banana4
Pear5

Look along the row to match the label and the number.

Read a pictogram

A pictogram uses symbols to show amounts.

Key: each dot = 1 vote

The pictogram: the number of symbols in each row. Key: each dot = 1 vote
CategorySymbols
Cats4
Dogs6
Fish2

Count the symbols carefully using the key.

Read a bar chart

Taller bars show larger amounts. Each bar is read from the numbered scale.

Favourite colours

Slide the chart sideways to see all of it.

012345678RedBlueGreenVotesColour
Favourite colours: the data in the chart
ColourVotes
Red3
Blue7
Green5

Follow the top of each bar across to the scale to read its value.

Worked example

Which fruit got the most votes in the table?

FruitVotes
Apple6
Banana4
Pear5
  1. Read each row in the table.
  2. Apple has 6 votes, Banana has 4 and Pear has 5.
  3. 6 is the greatest number.
  4. So Apple got the most votes.

Try it

Use the key or labels carefully, then compare the values shown.

Question 1

Which pet has the most votes in the pictogram?

Key: each dot = 1 vote

The pictogram: the number of symbols in each row. Key: each dot = 1 vote
CategorySymbols
Cats4
Dogs6
Fish2
Question 2

How many votes does Pear have in the table?

FruitVotes
Apple6
Banana4
Pear5
Question 3

Which colour has the tallest bar?

Favourite colours

Slide the chart sideways to see all of it.

012345678RedBlueGreenVotesColour
Favourite colours: the data in the chart
ColourVotes
Red3
Blue7
Green5
Question 4

How many total votes are shown for Apple and Pear together?

FruitVotes
Apple6
Pear5
Question 5

Which statement is correct?

Common mistakes

Watch for these when working through the lesson.

  • Ignoring the key in a pictogram.
  • Reading the category but not the value.
  • Comparing bars without checking the labels and the scale.

Related topics

These ideas fit closely with this lesson.

  • Solve one-step and two-step questions using information presented in scaled bar charts, pictograms and tables.
  • Add and subtract amounts of money to give change, using both pounds and pence.

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