Developing Concepts In Addition And Subtraction

Series: Duncan - Modern School Math Films Series

Year Published: 1971

Format: 16mm

Sound: sound

Copyright: Registered 1Sep70 · MP23691 (Jan-Jun 1973) Copyright holder: Houghton Mifflin Co

Description: W G Quast explains the commutative, associative and other properties of addition and subtraction and their application.

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