variable- a letter that represents a number in an equation or expression.

constant- the constant is the integer in algebra. n+5 -- +5 is the constant

expression- a pattern that has many possible answers.

equation- has only one possible answer.

One-step equations:

- Isolate the Variable
- Cancel the Constant using a Zero Pair
- Balance (do to both sides)
- Verify to check

non-shaded tiles= negative

Addition (Inspection)

Addition (tiles)

Subtraction (inspection)

Subtraction (tiles)

Multiplication (inspection)

Multiplication (tiles)

Division (inspection)

Division (tiles)

Two-step equations:

Multiplication (inspection)

Multiplication (tiles)

Division (inspection)

Division (tiles)

Here is a video on two-step equations

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