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Introduction to Algebra B

(Formerly called Algebra 2) Fundamental concepts of algebra, including quadratics, systems of equations, clever factorizations, complex numbers, functions, graphing, sequences and series, special functions, exponents and logarithms, and more.

16 weeks

Diagnostics

ARE YOU READY? DO YOU NEED THIS?

Documents

SYLLABUS
16 weeks ARE YOU READY? DO YOU NEED THIS? SYLLABUS  

Schedule

Friday
Sep 27 - Jan 31
7:30 - 9:00
PM ET
Sep 27 - Jan 31
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
FULL
Sunday
Oct 27 - Mar 2
7:30 - 9:00
PM ET
Oct 27 - Mar 2
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
CLOSED
Wednesday
Dec 11 - Apr 9
7:30 - 9:00
PM ET
Dec 11 - Apr 9
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
ENROLL
Tuesday
Jan 28 - May 13
7:30 - 9:00
PM ET
Jan 28 - May 13
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
ENROLL
Thursday
Feb 13 - May 29
7:30 - 9:00
PM ET
Feb 13 - May 29
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
ENROLL
Sunday
Mar 2 - Jun 22
7:30 - 9:00
PM ET
Mar 2 - Jun 22
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
ENROLL
Monday
Mar 17 - Jul 7
7:30 - 9:00
PM ET
Mar 17 - Jul 7
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
ENROLL
Wednesday
Apr 16 - Jul 30
7:30 - 9:00
PM ET
Apr 16 - Jul 30
7:30 - 9:00 PM Eastern
6:30 - 8:00 PM Central
5:30 - 7:00 PM Mountain
4:30 - 6:00 PM Pacific
Click here to see more time zones
$470 (~$30/lesson)
$537 w/books
$470 (~$30/lesson)
With Books $537
ENROLL

AoPS Holidays

There are no classes November 25 ‐ December 1, December 21 ‐ January 3, May 24 ‐ 26, July 4 ‐ 6, August 29 ‐ September 1, and October 31, 2025.

Who Should Take?

Students are ready for this class if they have mastered square roots and fractional exponents, order of operations, linear equations and inequalities, ratio, and proportion. We recommend that students have experience with factoring quadratics prior to taking this course.

Please note: Our Algebra sequence will likely not match up exactly with your school's. Most students who have completed our Introduction to Algebra A course or a high-level honors Algebra 1 course in school are ready for this class. However, we encourage students to take our Introduction to Counting and Probability class before beginning this course. Visit our Recommendations page for help in choosing the right class.

Lessons

1 Factorization
2 Quadratics and Complex Numbers
3 Completing the Square and the Quadratic Formula
4 Graphing Quadratics
5 Quadratic Inequalities
6 Optimizing Quadratics and AM-GM Inequality
7 Functions
8 Composition and Inverses
9 Graphing Functions
10 Polynomials
11 Exponential Functions
12 Special Functions Part 1
13 Special Functions Part 2
14 Sequences & Series Part 1
15 Sequences & Series Part 2
16 Challenging Problems Day

Required Textbook

Introduction to Algebra
By Richard Rusczyk
A thorough introduction for students in grades 6-9 to algebra topics such as linear equations, ratios, quadratic equations, special factorizations, complex numbers, graphing linear and quadratic equations, linear and quadratic inequalities, functions, polynomials, exponents and logarithms, absolute value, sequences and series, and more!
Related courses: Introduction to Algebra A and Introduction to Algebra B

This is a course that never runs out of interesting problems to tackle and goes far beyond other Algebra 2 courses I've seen in the past.