The SMP pie chart scale is marked in percentages of the whole circle, so students can read from a pie chart or draw one from their data without the conceptual interruption of having to convert each percentage from or to an angle in degrees . Each pack contains ten pie chart scales. Referred to the SMP Interact books but suitable for use with any course.
This is Book 3 in the School Mathematics Project 11-16 Series. See all School Mathematics Project 11-16 books here.
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