In this video tutorial, Professor Perez uses a real number line to demonstrate integers, natural numbers, rational and irrational numbers, and whole numbers. [8:17]

Numbers can be categorized more specifically into different number systems, for instances, natural numbers, whole numbers, integers, rational numbers, and irrational numbers. In this video, you will learn how to classify numbers into...

Given a set of numbers, learn how to tell which are rational and which are irrational. [2:17]

Explains what rational and irrational numbers are and the difference between them. [5:55]

Learn how to sort a bunch of numbers from least to greatest without using a calculator.

Point nine repeating equals one! 9.999...reasons in 9.999...minutes. Bonus points if you can name all 9.999...lords a-leaping.

Here, the student will be shown how to estimate the value of a root when they are not taking the root of a perfect square. This lesson is 2 of 9 in the series titled "Estimating Square Roots."

Here, the student will be shown how to estimate the value of a root when they are not taking the root of a perfect square. This lesson is 4 of 9 in the series titled "Estimating Square Roots."

Here, the student will be shown how to estimate the value of a root when they are not taking the root of a perfect square. This lesson is 5 of 9 in the series titled "Estimating Square Roots."

Here, the student will be shown how to estimate the value of a root when they are not taking the root of a perfect square. This lesson is 1 of 9 in the series titled "Estimating Square Roots."

In this lesson, students will learn Rational and Irrational Numbers.

Video explores properties of circles and what is wrong with the proof that pi is equal to four. [5:55]

This step-by-step example explores how to use rational approximations of irrational numbers to compare the size of irrational numbers.