Ontario K–8 curriculum · Glossary

broken-line graph

Definition

A broken-line graph uses connected straight lines to show how something changes over a period of time, like how a child's height changes each year.

A graph showing daily temperature for a week would have a point for each day, with lines connecting them to show if it got warmer or cooler.

How to teach this in 30 seconds

Try this analogy: A broken-line graph is like connecting the marks on a doorframe that show how much you've grown each year.

Ask your child: What story is this graph telling about what happened over time?

Common mix-up: Kids may think the line shows exact data for the times between the points. The line just connects the measured points to show the general trend of change.

Examples

  • Tracking how a plant's height changes each week.
  • Tracking how much rain falls in your city each month over a year.

broken-line graph is a term used in Ontario’s Kindergarten to Grade 8 curriculum.

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