Adding and Subtracting Integers

Multiplying and dividing negative numbers

Adding/subtracting negative numbers

Why a negative times a negative is a positive

Origins of algebra

Abstract-ness

The beauty of algebra

Introduction to the coordinate plane

Why all the letters in algebra?

What is a variable?

Why aren’t we using the multiplication sign?

How to evaluate an expression with variables

How to evaluate an expression using substitution

Evaluating exponential expressions 2

Expressions with two variables

Example: Evaluating expressions with 2 variables

Examples of evaluating variable expressions

Evaluating an algebraic expression in a word problem

Combining like terms introduction

Adding expressions

How to combine like terms

How to simplify a big expression by combining like terms

Combining like terms, but more complicated

How to simplify an expression by combining like terms and the distributive property

How to expand an expressions using the distributive property

Factoring algebraic expressions using the distributive property

Equivalent forms of expressions

How to write expressions with variables

How to write algebraic expressions with parentheses

Writing algebraic expressions example 2

Interpreting linear expressions, 1

Interpreting linear expressions, 2

Writing algebraic expressions word problem

Writing algebraic expressions word problem example 2

Writing algebraic expressions example 3

Algebraic expression adding fractions

Algebraic expressions with fraction division

What are variables, expressions, and equations?

Dependent and independent variables exercise: the basics

Dependent and independent variables exercise: graphing the equation

Dependent and independent variables exercise: express the graph as an equation

Multi-step unit conversion word problem

Unit measurement word problem: running laps (US customary)

Unit conversion word problem: roadtrip

Unit conversion word problem: drug dosage

Unit conversion word problem: yards to inches

Treating units algebraically and dimensional analysis

Figuring out units from formula

Thinking about reasonable units to describe a rate

Finding the best deal on pesticides

Mileage assumption example