Activity Description Create a pie graph, adjusting the size of the divisions using your mouse or by entering values. Parameters: Number of sections, size of sections, whether to use percents or fractions.

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Pie Chart

Place in mathematics curriculum:

This activity can be used to:

• illustrate the percentages and how they should add to 100%
• develop estimating skills
• introduce the idea of a pie chart
• practice students skills at reading pie charts
• give students insight into drawing pie charts
• develop recognition and understanding of data representations

This activity allows the user to view and make their own pie charts. A pie chart is an excellent way to show how the relative sizes of the parts of a whole. This activity would work well in same ability groups of two to four for about thirty to forty minutes if you use the exploration questions and five to ten minutes otherwise.

Preparations for this activity:

• answer the question "Why does the pie chart always sum to one hundred percent?"
• discuss pie charts, the idea of the whole, how to make predictions based on data