Patterns+&+Relations+-+Variables+&+Equations

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B3
Represent generalizations arising from number relationships using equations with letter variables.

Ted Talks: In Less Than Six Minutes Terry Moore on "Why Is 'x' The Unknown?"

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B4
Demonstrate and explain the meaning of preservation of equality concretely, pictorially, and symbolically.

=Curriculum-Wide Resources **Patterns & Relations - Variables & Equations** =

**Algebra Balance Scales -** Solve simple linear equations using a balance beam representation. [|Algebra (6–8)], [|Algebra (9–12)] (National Library of Virtual Manipulatives)