Virtual Nerd: What's an Irrational Number?

This video defines rational numbers. Through the definition and examples, learners should comprehend that irrational numbers are numbers that cannot become simple fractions. The video uses examples of very common irrational numbers, such...

Real numbers are numbers that can be found on the number line and can be either a rational or irrational number. This tutorial explains real numbers and gives some examples. [2:57]

Working with a zero exponent makes an expression very easy to figure out, yet it comes with some special rules. Watch this tutorial for guidance when working with a zero exponent. [7:08]

This tutorial provides an introduction to the number line and shows you how to graph numbers on the number line in order to compare them. [5:48]

This video defines rational numbers. Through the definition and examples, learners should comprehend that irrational numbers are numbers that cannot become simple fractions. The video uses examples of very common irrational numbers, such...

There are many different ways to solve a system of linear equations. In this tutorial, you'll see how to solve a system of linear equations by combining the equations together in order to eliminate one of the variables. Then, see how to...

Watch how exponents add when you divide the same number raised to different exponents. Reviewing the quotient of powers rule will help you on the SAT! [5:20]

Watch how exponents add when you multiply the same number raised to different exponents. Reviewing the product of powers rule will help you on the SAT! [4:30]

Do you remember what order to follow when you simplify an expression? To review for the SAT, watch this tutorial for a reminder of the order of operations. [3:18]

Find out what a set is and why it is so important to algebra. Watch this video to learn about the different kind of sets. [1:42]