Circle Graph to Bar Graph
Early Years
Based on Carol Stephenson’s Mathematics Program
Lesson Outline By Larisa Lam
Curriculum Goal (From the Ontario Ministry of Education Curriculum Document)
Data Management and Probability
For students to sort, classify, and display a variety of concrete objects,
collect data, begin to read and describe displays of data, and begin to
explore the concept of probability in everyday contexts.
Context
Students begin by sitting on the carpet in a circle. Students will move to
tables to work on their circle and bar graph.
Materials
Circle graph to bar graph package (Appendix A)
Pencils and erasers
Lesson
Introduction
• Show students the circle graph and explain that this is another way to show information.
• Explain that students will be transferring the circle graph information into a bar graph because it is easier to read
in a bar graph form.
Lesson
• Have students go to different tables and work on transcribing the circle graph onto the bar graph.
• The last page of the circle to bar graph package will have questions about the graph.
- For example: How many more robins did you have than cardinals?
Closure
• When students finish filling in the graphs, they can practice asking each other questions about the graph.
Extension Activities
Tooth Graph
• Have tooth graph going throughout the year.
• Each child should have their own magnet with their name on it. As they loose a tooth they can move their name
to the appropriate column.
• For example the graph can have the numbers 0 - 5 along the bottom.
Circle Weather Graph
• This works best in the month of November because in Canada that is typically when we witness the most diverse
weather.
• Each day look out the window and put a mark in the appropriate section.
• Have students predict which type of weather they will get the most of in November.
Siblings Graph
• In small groups, build a sibling graph.
• Ask students how many siblings they have and have them put their mark in the appropriate place.
Appendix A