Step-by-step math courses covering Pre-Algebra through Calculus 3.

Be successful in math

Let the videos, notes, quizzes and extra support help you get there

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Get ready to pinch yourself, because math really can be this easy




1. Every single math course I've ever made.

The fundamentals of middle school math all the way to advanced calculus. Access to every course and lesson you need to ace your class.

2. A structure that makes sense.

An optimized course flow to make studying and homework faster. So you “get it” in less time than you would figuring things out on your own.

3. Open Q&A sections.

Still don’t understand something? I check into the Q&A sections of the courses at least once every weekday. Ask away. I’m happy to help.



math videos


Watch over my shoulder as I solve problems for every single math issue you’ll encounter in class. We start from the beginning. I explain the setup and why I set it up that way, the steps I take and why I take them, how to work through the fuzzy middle parts, and how to simplify the answer when you get it.

math notes


The notes section of each lesson is where you find the most important things to remember. It’s like Cliff Notes for books, but for math. Everything you need to know to pass your class and nothing you don’t.

math quizzes


When you think you’ve got a good grasp on a topic, you can test your knowledge without affecting your grade by taking one of our quizzes. If you pass, wonderful. If not, you can review the videos and notes again, or ask me for help in the Q&A section.


Below each lesson there’s a place for you to ask me questions. Anything goes, as long as it’s math related. There’s even a function for you to upload a picture of your work to show me exactly what you’re getting hung up on.


Your grade is about to get a serious lift. #winning


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The courses


The courses


Pre-Algebra is the basis you need for all the math classes you’ll ever want to take. If only it weren’t for those darn fractions making things complicated. (We know your teacher lied when she said fractions were simple, don’t worry.) Learn more

In Algebra 1, there are lots of numbers + letters and math theory that sometimes don’t make much sense. Learn how to simplify all of it and get a true grasp on what’s going on. Learn more


Yeah, shapes are cool. But not when you have to pick from a list of a million theorems to prove why a triangle is a triangle. In this Geometry course, learn which theorems to pick, in what order, and how to apply them to ace your homework every time. Learn more

It’s like Pre-Algebra & Algebra 1 got together and had a really ugly baby. You thought you had all the complicated equations down, only to realize things like equation systems and advanced factoring exist. (Don’t worry, we’ll help you simplify it.) Learn more


You thought you signed up to study triangles, but now your teacher is insisting you memorize a unit circle? Don’t worry, we’ve got some good tricks that make it much, much easier to remember. Learn more

You’re studying all kinds of curves and complex numbers. And then your Precalc teacher throws in imaginary numbers on top if all and it’s just one big mess. You’re pretty good at math at this point, but WHY you need the square root of a negative number is beyond you. Learn more


In Probability & Statistics, there's lots of data, graphs, and symbols that can sometimes be hard to understand. Learn how to simplify all of it so that you can confidently use statistics to analyze and make conclusions about a data set. Learn more

College-level math just got real. Instead of the math you’re used to that can actually be used to solve real-world problems, you’re dealing with a ton of ambiguous theory that feels impossible to grasp (but we’ve got some super-special secrets to help). Learn more


If Calc 2 is hard, no worries. For most people, it’s harder than Calc 1 and Calc 3. Finding the volume of a 3-D solid object might sound easy at first… but not when you have to use curves and intersecting lines to figure it out. But don’t worry, we’ll help you wrap your mind around it and pass your test with flying colors. Learn more

Most people don't take this class just for the fun of it (or maybe you're the exception!). You probably need it because you want to be some sort of mathematician, scientist, or engineer. The good news is the difficulty of multiple integrals does not have to stop you from achieving your dreams. Learn more


The big, green, angry Hulk-version of calculus. You deal with multiple variables changing at different rates and different rates of change for each one. Yeah, #complicated. (But not too complicated to figure out, so don’t worry.) Learn more

In Linear Algebra, there's lots of matrix and vector operations that can sometimes be hard to understand. Learn how to simplify all of it so that you can confidently use linear algebra to manage large amounts of data. Learn more

Learn math with Krista


30-day money back guarantee

If you study our videos and notes and don’t do a double-take when you get your next quiz grade back, ask for a refund.

Here's what other students have done after signing up for CalculusExpert:

  • Getting accepted into prestigious university programs.

  • Passing a midterm with a B+ after one night of studying.

  • A high school failure pursuing a math degree.

  • Thinking math was too hard and then pursuing it as a minor.


We know our in-depth videos and course material will help you. We know our courses will be the exact fix you’ve been so desperate for to help you pass your class so you can get on with your education, finish your degree with less stress, and have the career you’re dreaming of.


But if it’s not everything you’ve hoped it would be, we let you try it out risk-free for 30 days. If you’re not happy for any reason, let us know and we’ll process your refund ASAP.

save over 50% with a one-year subscription.


Imagine how good you’ll feel taking your next math test knowing that you’re going to pass it.

P.S. If Calculus Expert doesn't sound right for you right now, I still have plenty for you to check out. Start with my blog or my YouTube Channel.