Holes and Plugs.

Gibbs, Richard A.

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ERIC Number: EJ179940

Record Type: Journal

Publication Date: 1977

Pages: N/A

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Holes and Plugs

Gibbs, Richard A.

Mathematics Teaching, 81, 19-21, Dec 77

A manipulative model for the addition, subtraction, and multiplication of integers is described in which a carpet square with a hole in it and the plug that fits in the hole are "opposites" of each other. Several other models for integer multiplication are briefly described. (MN)

Descriptors: Elementary Education, Elementary School Mathematics, Instructional Materials, Integers, Manipulative Materials, Mathematical Models, Mathematics Education, Mathematics Materials, Teaching Methods

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