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Centesimal Circle and Protractor

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To introduce the concepts of angles, degrees and how a whole can be broken down into smaller components, the Centesimal Circle & Protractor set provides a simple visual reference.  Each wooden board is 14 cm x 14 cm with a 10 cm inset circle.  The boards are black with easy-to-see white markings.  This set can be used together with the Fraction Insets (sold separately) to demonstrate how a fraction corresponds with an angle measurement, or as a part of 100.

Age Range

5 yrs +

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