Math
Algebra 101: Solving Ratio Word Problems
Solving ratio word problems can be brain-twisting, but once you get the hang of the formula, any problem is easily solvable. In this guide we’ll look at what a ratio is, and go step by step through the process of solving any ratio word problem. More…
How to Calculate Relative Error Howcast video
Use relative error to express accuracy as a relative quantity.
How to Calculate Variance Howcast video
Impress your employer or teacher with your knowledge of statistics without the headache of complicated computations or formulas.
How to Calculate Volume Howcast video
You can find the volume of various 3-D objects using a few simple mathematical formulas.
How to Calculate the Volume of a Cylinder Howcast video
No matter the size, you can use the same simple formula to determine the volume of a cylinder.
Calculus 101: The Position Equation
Position equations are a nice transition into calculus word problems. More…
Calculus 101: What Is a Limit?
In this guide we will look at what a limit actually is before you have to get too nutty with the math part of things. More…
How To Divide Fractions Howcast video
Follow these simple steps, and soon you’ll be dividing fractions like a pro.
How to Do Long Division Howcast video
No calculator handy? Here’s how to divide numbers the old-fashioned way.
How to Find the Geometric Mean Howcast video
The geometric mean of two numbers is the square root of their product. More generally, it is the “nth” root of the product of n numbers.
Geometry 101: How to Build a Truth Table
A logical argument requires you to string together true statements that are dependent on each other. More…
Measures of Central Tendency: Mean, Median, and Mode
Measures of central tendency is a valuable tool to help summarize many pieces of data with one number. In this guide, we will explore the many ways to measure the central tendency of your data. More…
How to Multiply Matrices Howcast video
Multiplying matrices is painless when you understand the method described here.
Solving Linear Equations
If one process sets algebra apart from basic arithmetic, it is solving linear equations. Figuring out what x means can be frustrating if you don’t have the right tools to figure it out. In this guide, you will learn the processes that you need to solve every equation, every time. More…
Trigonometry 101: Trigonometric Functions Explained
In this guide we’ll explain what a periodic function is, and look at how each of the trigonometric functions work. More…
How to Use the Basic Functions of a Graphing Calculator Howcast video
Going from a pocket calculator to a graphing calculator can be as daunting as going from a skateboard to a car. Make the jump and learn the basics of using a graphing calculator.
How to Use the Pythagorean Theorem Howcast video
The Pythagorean Theorem is a cornerstone of geometry. Here’s how to use it.