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Welcome to Algebra2go®. Whether you are attending a math class at Saddleback College, taking a math class at another school, or just need to refresh your math skills for a business or science class, we have tools that can help. All these resources are free thanks to the support of Saddleback College, the California Basic Skills Initiative, and the Saddleback College Foundation. We have many distinct categories of resources. The Algebra2go® team has received a Sloan Consortium award for Effective Practices and this site was designated a MERLOT Classic by the Multimedia Educational Resource for Learning and Online Teaching. If you are interested in the pedagogical techniques employed at this site, or the research methodologies used to create these resources, please follow the preceeding links. Whichever materials you decide to use, we would appreciate your feedback. Please let Professor Perez know what you liked and didn't like about these materials by sending him an e-mail.

Video Lectures

Our most popular tool is the video lectures where you can attend Professor Perez's virtual classroom alongside his favorite student, Charlie. Each short video focuses on a single topic, so you can pick and choose the ones you need. They are available on YouTube and on TeacherTube as well as this site.

Video Worksheets

Every video is accompanied by a worksheet that mirrors the presentation so you can work along with Charlie. Students tell us that this active learning process is a good way to improve understanding and increase retention.

Homework Sets

Professor Perez has also put together a collection of homework problems and solutions for most of the videos. These short problem sets provide an opportunity to practice the skills demonstrated in the video presentations.

Topic Quizzes

Most of the videos are accompanied by a set of three online practice quizzes so you can determine when you are ready to move on to the next topic. Just fill in the blanks with the correct answers to each question. When you finish, Charlie will let you know how you did.

Class Notes

We have complete sets of notes for our pre-algebra and beginning algebra courses. The notes are neatly handwritten for that personal touch. For prealgebra we also have the notes neatly handwritten in Spanish.

Templates - Pre-algebra

These are resources like blank graph paper or blank number lines. They can be printed and used to practice problems from particular topics.

Web Tools - Pre-algebra

For some topics we have web tools to help you master the math. These are interactive web pages which are available online. An example is our virtual abacus.


Full Courses

Ultimately we plan for the Algebra2go® materials to span the curriculum from arithmetic to college algebra. Students will have support for every step from high school to either a university or to the workforce. Currently we have two courses worth of material available.


Pre-algebra is the centerpiece of this project. We have nearly complete sets of notes, videos, video worksheets, problem sets, and online quizzes. Pre-algebra focuses on the fundamental concepts necessary to make the transition from arithmetic to algebra. The major topics covered are: addition and subtraction, multiplication and division, integers, fractions, variable expressions and equations, decimals, ratios, proportions, and percent, and conversions.

Beginning Algebra

Beginning algebra is not as complete as pre-algebra, but that is next on our to-do list. Still there is a complete set of notes and a considerable number of videos available. These videos have proven to be among the most popular at Professor Perez's YouTube site. In beginning algebra you master the basic tools necessary to solve algebraic problems. The main topics covered include: the real number system, linear equations in one variable, linear equations in two variables, systems of linear equations and inequalities, polynomials, rational expressions, radical expressions, and quadratic equations.

Intermediate Algebra

Intermediate algebra is also not as complete as pre-algebra, but we have added this to our to-do list. There is a complete set of notes and video content will be added soon.


Calculus 1 & 2 are in their early stages of development. Still there is a complete set of notes and selected videos available.