Virtual Nerd: What Is the Number Line?

There are many ways to approach finding the rational approximation of an unknown square root. Here is a problem that will help math learners make a connection between square roots and their order on a number line. As usual, determine two...

For a line to be tangent, it must have a special relationship with a circle. It can only intersect the circle at one point. Watch this tutorial for a better understanding. [3:01]

The line you reflect a figure over is called the line of reflection. Watch this tutorial and learn about the line of reflection. [3:14]

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]

A net is a two-dimensional version of a three-dimensional solid. Watch this tutorial for an introduction to nets. [5:25]

An irrational number is a number that cannot be written as a fraction. View this tutorial to see some examples and learn the definition and an important property of these special numbers. [2:06]

This tutorial introduces transversals and shows what happens when a transversal meets two parallel lines. [6 :22]

Points are needed to make lines, planes, angles, or polygons. and also for graphing. Watch this tutorial to learn about points. [3:50]

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]