Small Abacus

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The Small Abacus is designed to give a clear understanding of place value. The EASE abacus only allows 9 pieces in any column in order to get across the idea that 10 units must be exchanged for 1 ten. This principle works throughout. Mathematical ideas:Decimal numbers and relationship to base 10Place valueContents: Small Abacus base board with 40 place value pieces. Show more