# Introductory Algebra Lessons

Add and Subtract Fractions: Different Denominators

Add and Subtract Fractions: Same Denominator

Add and Subtract Numbers using the Number Line

Divisibility Rules for 2, 3, 4, 5, 6, 9, and 10

Finding All Factors of a Number using the Rainbow Method

Function: Notation and Evaluation

Linear Equations: Solving One-Step Equations

List of All Factors of Numbers from 1 to 100

List of Multiples of Numbers from 1 to 100 (First Ten Multiples)

Multiply and Divide Positive/Negative Numbers

Order of Operations: Practice Problems

Plotting Points on a Graph or XY-plane

Prime Factorization of Numbers 2 to 100

Scientific Notation: How to Write

The Properties of Real Numbers

Translating Basic Math Phrases into Algebraic Expressions

Translating Multi-Part Math Phrases into Algebraic Expressions