Addition And Subtraction Algorithms: National Council Of Teachers Of Mathematics

Creator: National Council of Teachers of Mathematics.

Format: 16mm

Sound: sound

Description: Introduces addition and subtraction algorithms based upon their properties and previously learned facts about the numeration system.; Introduces the Israeli kibbutz as an ongoing experiment. Looks at the lifestyles in several communities, the historical development of the concept, and the problems and satisfactions of communal living.

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