Subraction For Beginners
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Revised edition of 'SUBTRACTION IS EASY.' Illustrates subtraction problems with sets and numerals. Explains the minus, equals and inequality signs and the place holder. Stresses the number line and the concept of subtraction as the inverse of addition.
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- 16mm Filmography (legacy record) — title, creator, format, sound, genre, description, catalog record
Original permalink · Record added 2023-02-27 18:04:56