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← College Algebra
Semester 1

The Building Blocks: Numbers, Equations and Functions

You start with the rules that all of algebra rests on -- numbers, exponents, radicals, polynomials and factoring -- and use them to solve equations and inequalities. By the end you meet the idea of a function and can read its graph.

Class 1

Real numbers and the basics of algebra

The numbers and rules everything in algebra rests on.

Class 2

Exponents and scientific notation

A short way to write repeated multiplication and huge numbers.

Class 3

Radicals and roots

Square roots and beyond, and how to handle them.

Class 4

Polynomials

Adding, subtracting and multiplying expressions with powers.

Class 5

Factoring

Breaking a polynomial back into the pieces multiplied together.

Class 6

Rational expressions

Fractions where the top and bottom are polynomials.

Class 7

Linear equations

Solving equations where the variable is to the first power.

Class 8

Quadratic equations

Solving equations with a squared term.

Class 9

More equations and complex numbers

Other kinds of equations, and numbers beyond the real line.

Class 10

Inequalities

Solving when one side is bigger, not equal.

Class 11

Functions and their graphs

The idea of a function, and seeing it as a picture.

Class 12

Semester 1 review: from numbers to functions

Pulling the basics together and solving real problems.