Title Work Title No: 24437 Alternate Titles: Mathematics for primary grades - addition Medium: Moving Image Date: 1978 (Release) Original Summary: "Illustrates the operation of addition as sets of bunnies, boats, helicopters, desk lamps, and roller skates join together to make new groups and arrange themselves to exemplify the commutative property of addition" - Summary from Worldcat. Countries of Origin: U.S.A. Genres: Educational
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