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

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B3
Demonstrate an understanding of preservation of equality by modelling preservation of equality concretely, pictorially, and symbolically applying preservation of equality to solve equations.

B4
Explain the difference between an expression and an equation.

B5
Evaluate an expression given the value of the variable(s).

B6
Model and solve problems that can be represented by one-step linear equations of the form x+a=b concretely, pictorially, and symbolically, where a and b are integers.


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

B7
Model and solve problems that can be represented by linear equations of the form:
 * ax + b = c
 * ax = b
 * x/a=b, a≠0 concretely, pictorially, and symbolically, where a, b and c are whole numbers.

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

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

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

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