# Pre-Algebra Lessons

## Variables, Expressions and Integers

- Evaluating Algebraic Expressions
- Powers and Exponents
- Order of Operations
- Absolute Value
- Adding and Subtracting Sign Numbers
- Multiplying and Dividing Sign Numbers
- The Coordinate Plane

## Simplifying Expressions and Solving Equations

- Commutative, Associative and Distributive Properties, Identities and Inverses
- Simplifying Expressions (Adding and Subtracting)
- Solving One-Step Equations Using Addition and Subtraction
- Solving One-Step Equations Using Multiplication and Division

## Solving Equations and Inequalities

- Solving Two-Step Equations
- Solving Equations Using the Distributive Property
- Solving Equations with Variables on Both Sides
- Solving Inequalities Using Addition and Subtraction
- Solving Inequalities Using Multiplication and Division
- Solving Multi-Step Inequalities

## Factors, Fractions and Exponents

- Factors and Prime Factorization
- Greatest Common Factor
- Simplifying Fractions
- Least Common Multiple
- Properties of Exponents
- Negative and Zero Exponents
- Scientific Notation

## Fractions and Equations

- Rational Numbers
- Adding and Subtracting Fractions
- Multiplying and Dividing Fractions
- Solving Equations and Inequalities with Fractions

## Ratio, Proportion and Probability

- Ratios
- Proportions
- Similar Figures
- Experimental Probability
- Theoretical Probability
- Probability with "And" and "Or"
- Multiplying Probabilities
- Odds
- The Counting Principle
- Permutations and Combinations

## Percents

- Percents, Decimals and Fractions
- Percent Equations
- Percent Change, Increase and Decrease
- Percent Word Problems

## Linear Functions

- Domain, Range and Linear Functions
- Linear Equations in Two Variables
- Intercepts
- Slope
- Slope-Intercept Form of a Line
- Function Notation
- Solving Systems of Linear Equations Graphically
- Graphs of Linear Inequalities

## Square Roots and Right Triangles

- Square Roots
- Simplifying Square Roots
- The Pythagorean Theorem
- Distance and Midpoint Formulas
- Special Right Triangles
- Sine, Cosine and Tangent

## Geometry

- Triangles
- Polygons and Quadrilaterals
- Areas of Quadrilaterals
- Circles
- Lateral and Surface Area
- Volume

## Polynomials and Non-Linear Functions

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