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We don't like knocking people down to size, but we do like simplifying radicals. Join us?

Okay, so this probably isn't going to help you master Pokemon Go, but game theory can be applied to all sorts of situations. Even stomping your old...

Algebra and Functions: Drill Set 2, Problem 5. Simplify the expression.

Mosquitos need their caffeine, just like the rest of us. Wouldn't think zipping around and stinging people all day long sap your energy?

Go forth and multiply... matrices.

Your one video for all things matrix operations.

Breathe in deeply through the nose... Now slowly exhale... Breathe in... And out... Now visualize the graph of the limit of f(x) as x approaches 2....

What do snickerdoodles and velocity have in common? Derivatives! No, that wasn't a bad attempt at a joke. Get on our level by watching this speedy...

Riemann sums are a way to estimate the area under a curve. Check out the video for all the deets.

Haven't you always wondered how much cardboard it takes to encase a trunk warmer for your pet elephant?

Want to figure out the area and perimeter of irregular shapes? Break them down into regular shapes. For example, a flower can be broken down into s...

It's one thing when all those shapes are sitting flat on the page. But when they start popping out and invading our personal space bubble, we get a...

ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?

SAT Math 4.3 Numbers and Operations

SAT Math 2.4 Numbers and Operations

ACT Math: Coordinate Geometry Drill 3, Problem 1. What shape is shown by the equation in this video?

ACT Math Elementary Algebra Drill 4, Problem 3. Simplify the expression.

FYI: cats don't like to get wet. Okay, so that fact won't be relevant every time you solve trig equations, but it happens to be this time.

SAT Math: Statistics and Probability Drill 1, Problem 2. If the four largest numbers in the set were doubled, what would happen to the median...

SAT Math 1.4 Statistics and Probability. If two standard 6-sided dice are rolled, what is the probability that the sum of the dice will be gre...

SAT Math 1.5 Statistics and Probability. If Silas draws one card, then places it in his pocket and draws another, what is the probability that...

CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.

ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?

AP Statistics 2.1 Exploring Data. How does this change affect the mean, standard deviation, and IQR?