Virtual Nerd: What Is Sigma Notation?

Learn how to indicate that an equation is a function by watching this tutorial. [0:58]

Prepare for the SAT by reviewing how to simplify expressions using the distributive property. Watch this video for an explanation and examples. [5:45]

To simplify radicals, review the product property of square roots. This video will explain the concept along with examples. [4:15]

How do you take a square root of a fraction? Watch this tutorial on how to use the quotient property of square roots to find the answer. [3:50]

A simple definition of f(x), function notation.

Take a look at this tutorial to learn about line segments, how to name them, and what the midpoint of a line segment is. [3:13]

Take a look at this tutorial to learn about how an angle is formed, how to name an angle, and how an angle is measured. [4:45]

The Law of Cosines helps solve some triangle problems. This video explains several versions of the law of cosines and what they are used for. [9:22]

Discover what a relation is through a set of ordered pairs. [0:50]

The median is one of many measures of central tendency. Watch this tutorial to learn what the median is and how to find it. [5:11]