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ERIC Number: EJ179940
Record Type: Journal
Publication Date: 1977
Pages: N/A
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: N/A
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)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A