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MATHEMATICS OBJECTIVE
Students will be able to:
solve a problem using a two-step equation.
compare algebraic and arithmetic solutions.
ESSENTIAL UNDERSTANDING
One- and two-step problems can be represented by an equation. The equation can then be solved using properties of equality.
I can use a model to solve a two-step equation.
I can compare algebraic and arithmetic solutions.
The properties of equality can be applied the same way when solving two-step equations as when solving one-step equations.
The inverse relationship between operations determines the property of equality needed to "undo" the operations in the equation.
5x + 27 = 122
5x + 27 - 27 = 122 - 27
5x = 95
5x/5 = 95/5
x = 19
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