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Lesson Plan: Fact Families
Go to: http://illuminations.nctm.org/lesson.aspx?id=329 (opens a new window)
Description: In this lesson, the relationship of addition to subtraction is explored with books and with connecting cubes. Students search for related addition and subtraction facts for a given number using a virtual or actual calculator to find differences. They also investigate fact families when one addend is 0 as well as when the addends are the same.
Technology Type: Computer 
Authors: NCTM: Illuminations
Grace M. Burton
Language: English 
Cost: Does not require payment for use

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