Virtual Nerd: How Do You Find the Perimeter of a Rectangle in a Coordinate Plane

A quadrilateral is drawn on the coordinate plane, and eighth grade geometers find the length of each side and the diagonals by applying the Pythagorean theorem. 

Probability is the likelihood that a given event will take place. So how do you determine the probability of a simple event? Watch this example using marbles for an explanation. [4:36]

The teacher illustrates a diagram to help you learn about perimeter. First she adds the sides together to get the perimeter. Then she shows how to use the perimeter formula to make it a bit simpler.

The Fundamental Counting Principle can be used to find permutations. This tutorial will walk you through the steps with an example of finding the number of ways to rearrange the letters in the word NUMBER. [4:25]

Mean is another word for average. Learn how to determine the mean from a set of data. Watch this tutorial for an example. [3:13]

The complement of an event is the set of all non-favorable outcomes. Watch this demonstration to understand how to find the complement of an event. [5:36]

Using a card trick as an example, this tutorial explains how to find the probability of independent events. [5:53]

The range is the difference between the largest number and the smallest number in a set of data. View this video for an explanation and examples of finding the range. [3:16]

The mode of a data set is the number that appears most frequently. Learn how to find the mode of a data set with these examples in this tutorial. [3:07]

How can you visually show what occurs most often in a set of data? A frequency table is one way! Watch the step by step process on how to make a frequency table from a data set. [8:06]