Charts and graphs · Grade 3
In Grade 3 you get fluent with: block diagrams and tables; bar graphs.
Charts turn a table of numbers into a picture you can read at a glance. Bar charts compare separate groups. Pie charts show how a whole is shared out. Line graphs show how something changes over time.
Key facts
- Bar chart: go across from the top of a bar to the scale, and check what each gridline is worth.
- A dual bar chart puts two groups side by side to compare them.
- Check the scale: an axis that does not start at 0 can make small differences look big.
Worked examples
Example 1
The bar chart shows visitors to a museum. How many more visitors came on Saturday than on Sunday?
Answer: 35 more