Why am I here?

You need a qualified math teacher!

A great math teacher is hard to find. There’s no substitute for an experienced and effective math teacher who is there for your students at every class. If recruiting a qualified math instructor is too difficult or prohibitively expensive, Cool Math Guy (CMG) can help.

CMG video math programs not only provide a veteran math teacher, they fully support the host teacher. You can deliver a complete math course that students enjoy, helps parents and teachers succeed, and saves schools money.



Watch the lessons you need at your own pace.
Rewind and watch as many times as it takes.


Ask questions in a virtual classroom environment,
or send questions directly to the instructor.


Take quizes at the end of lessons, and monitor
your progress throughout each course.
*Quizzes coming soon!

What is included?

  • Video Instruction – Complete series of video tutorials organized by lesson/topic
  • Testing Materials – Tests, practice tests, and answer keys
  • Resources Guide – Sources for reasonably priced textbooks and solutions guides
  • Curriculum Map – Assignment lists to build or supplement your curriculum
  • Teacher Support – Personalized support from Dana or teachers currently


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How Does it Work?: Using Video Instruction In Your Classroom

  1. Flip your classroom. Assign video(s) to watch and a textbook activity to complete before class meetings.
  2. Offer many options for help. If students get stuck on a math problem, they can (a) rewatch the video, (b) search the textbook for a similar example, (c) follow along to the answer in the step-by-step solutions guide, (d) save their question for class, or (e) contact Dana Mosely.
  3. Reinforce in class. Answer student questions and conduct activities such as worksheets, quizzes, or group discussion. It may help to rewatch the video as a class.
  4. Check student progress. Assign practice tests (in-class or take-home) at suggested intervals, usually following successful completion of several sections. Review as necessary according to student progress.
  5. Complete the chapter with the end-of-chapter test.

How Does it Work?: Getting Started

  1. Get textbooks. As classes form for the year and students register for math courses, send parents the ISBNs for textbooks and solutions guides. Links to online vendors can be found on the Cool Math Guy website.
  2. Collect funds for video access for each student. One-year access to the video program is $80 per student.
  3. Buy the program. When you know the final headcount for your math class, proceed to Purchase Now and follow directions for payment.
  4. Get access codes for students and yourself. Once your checkout is complete, you will immediately receive a coupon code for the number of students you entered, plus one more code for yourself to access the CMG videos.
  5. Distribute codes and setup instructions. The coupon codes you receive include step-by-step instructions on getting set up.

What are the benefits?

For Students

  • Math delivered by a qualified instructor to
    foster understanding & retention
  • Engaging video format

Ideal for digital natives:

  • Rewind, fast forward to important parts
  • Watch as many times as needed
  • Available whenever, from wherever, on
    any device

For Teachers

  • Instant access to all videos on
  • – to help you become
    more effective in your role

Making it easier to teach:

  • All videos accompanied by sources for
    textbooks (ISBNs and links to online vendors)
  • Includes course maps with suggested
    assignments and testing materials

For Parents

  • Solid math instruction in your home
  • Rigorous math courses on par or better
    than nearby schools
  • No need to teach math yourself or
    hire a tutor
  • Homeschoolers receive all teacher benefits

For Schools

  • Cost-effective way to procure a math teacher
    ($80 per student per year)
  • Fulfill broad spectrum math curricula
  • Improve school reputation & enrollment
  • Improve test scores

Lesson Samples:

Geometry Section 1.1 Sets, Statements and Reasoning

Prealgebra Section 1.5 The Order of
Operations Agreement

Algebra 2 Section 3.3
Factoring Polynomials

Calculus Section 6.1
Basics of Differential Equations

College Algebra Section 4.4
Conic Sections

Arithmetic – 2.2 Introduction to Fractions

Who is the Cool Math Guy?

Dana Mosely is the video instructor and host of Cool Math Guy programs.
He has taught math to students at all levels, from middle school to advanced university courses:

7 years as a junior high math teacher
11 years as a high school math teacher
5 years as a full-time college math professor (and many years as an adjunct)

20 years as the on-screen host and producer of video programs for math textbooks published by the college divisions of Houghton Mifflin Harcourt, Cengage Learning, and DC Heath and Company (now a part of Houghton Mifflin Harcourt)

From the mid 1990s, Dana has interacted with homeschoolers, administrators, parents and their children via the Chalk Dust Company, publisher of Cool Math Guy video instructional programs.

Dana’s Teaching Style

Math comes alive—and becomes approachable—under the right teacher. Dana’s teaching style is conversational, engaging, and easy to understand. He has a knack for explaining complex math in what feels like a living room chat, taking the anxiety out of difficult or intimidating topics.

Frequently Asked Questions

Browse F.A.Q. Topics

From Students

  • Is a calculator necessary? If so, which one?

    Scientific calculators are helpful beginning in upper-level arithmetic, but you want to avoid calculator dependence.

    Teachers typically determine how much emphasis to put on calculators. It’s important that students are strong in a technique (such as multiplication, or graphing a linear inequality) before they are allowed calculators that do the technique for them.

    In general, calculators should be used only to save time, after the relevant concepts are learned thoroughly. Basic formulas should be memorized.

    With the above guideline in mind, seek scientific and graphing calculators with functions that are appropriate for the course or grade level. Keep in mind that AP tests, ACT and SAT, and other standardized exams have “prohibited models” of calculators and very specific rules concerning calculator use.

  • Is learning math using video harder than a class with an in-person teacher?

    First, math content is the same either way. Every kid needs to learn the same concepts, no matter where they go to school or who their teacher is. What makes a difference – getting through difficulty on to success – is the teacher’s style of delivery and the kind of help students get when they’re stuck.

    You can get a feel for Cool Math Guy’s teaching style by looking at the free sample videos. Preferences will of course be subjective, but you can hear how Dana’s delivery is clear and conversational no matter the topic.

    When students get stuck on a problem, they get help by asking questions in class; asking classmates, parents, or tutors; or by finding other examples in their study materials. All of these options are available to students who learn by video –  with the added option of replaying their video teacher’s explanation.

From Teachers

  • When a test is worth, let’s say, 82 points, how can I assign a grade?

    Divide the student score by the total score, then turn the decimal into a percent.

    Suppose a student scores 75 out of 82 on the test. Think of it first as a fraction expressed as 75/82. 75 divided by 82 is 0.9146… which is 91%. The grading scale at most schools for 90%-100% is an A.

  • I am going to teach math next year because I want to help out at my school, but I don’t have much experience, so I don’t have much confidence. Can you help me?

    Actually, yes. We know a math teacher in Georgia who started the same way. She had an engineering degree, so she understood how to do the math, but she had no experience teaching and, therefore, not much confidence. She used the Cool Math Guy videos in her class, and by watching the videos herself, became a very accomplished and confident teacher. She now teaches AP Calculus AB at her small private school.

General FAQs

  • How Do I Cancel?
    You can easily cancel your monthly subscription at any time. Simply go to the MY ACCOUNT section. In the Left column click "Subscriptions." You may manage and cancel your active subscriptions here.
  • Do you offer sample problems or course books with each course?
    We do not offer any supplemental material at this time. However, the instructor does cover several example problems in each video segment and we do have a list of corresponding textbooks and solutions manuals that you may optionally purchase on your own.

    View Recommended Books
  • Can a school sign up for access to your program for students and teachers?
    Yes.  Just call the phone number on the website and we will set you up. You may also purchase group packages for your students using the "Educators" products on the site.  You might be interested to know that some schools use the video to train their teachers and many teachers use video to brush up on topics or to learn new ways to present them.  Some schools even use the video as their primary teacher. Upon purchasing one Educators Package, the teacher gets unlimited access to our entire Math library.
  • How do I know your video instruction will work with my child’s textbook?
    The Department of Education in each state produces a list of standards that students are expected to achieve in each course.  Those standards are remarkably similar from state to state and the major textbook publishers produce books that address those standards.  Therefore, the scope and sequence of math topics are remarkably similar from textbook to textbook and the video elements on this site address those standards as well.
  • What results can I expect if my kids use your video?
    There is no guarantee, but experience indicates a one letter-grade improvement or better for almost every student that uses the videos, even those with special needs.  That performance expectation is not unreasonable when you consider some of the differences between classroom instruction and video instruction:  
    1. Video instruction can be repeated
    2. Video instruction has no distractions
    3. Video instruction is available at any time of day
    4. Video instruction is available when the student is ill or on vacation
  • I’m considering a Math Tutor but they are expensive. Will your program be as effective?
    Video instruction is just as likely as a tutor to make a difference for students and it is much less expensive.  When watching the video, try to create a setting with few distractions.  Complete quiet is not necessary, but try to avoid any loud outbursts from other sources.  Apart from watching video, encourage the completion of homework in your classes. 
  • I like your presentation method, but how do I get my kids involved?

    Ask your children to watch one or two free sample sections with you.  Watch them as they watch the video.  You should know within moments if the video instruction is engaging them.  Ask if they follow the conversation and enjoy the presentation style.  [You are way ahead if they are onboard with the video instruction idea.]

    With their help, find where they are in their book.  Click on “Courses, Lessons, Prices and Checkout” and navigate to a course and table of contents.  Select the corresponding topic in the table of contents and follow the simple instructions for checkout.  Encourage your children to watch the video more than once for reinforcement.

  • What is the best way to get the most out of your video instruction?
    Although most students will seek help only when confused or behind, the most effective way to utilize the video instruction is to become proactive.  That is, watch video corresponding with classroom topics before the topics are presented in class.  Doing so will make math seem very easy and will enhance long-term memory of topics.
  • Can your programs replace a tutor?
    For many students, yes, but a good tutor, like a good teacher, is invaluable for some students.  It depends on the needs of the student so it might be wise to experiment a bit.  That is, try the video without a tutor at first and if you are not getting where you want to be, bring on a tutor.  If a tutor is needed for your child, you will find the videos will reinforce the tutor’s instruction, making both more effective.  By the way, some tutors already recommend our videos and use them to help their students.

Do you have additional questions?

If you have questions that we didn’t answer here, contact us!


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