National Education Association
Evaluating Expressions Without Radicals
Evaluating expressions require two things- parentheses and PEMDAS. The video starts with an emphasis on using parentheses to plug in your variables. Once you have everything plugged in, PEMDAS will get your mathematicians to the correct...
Khan Academy
Khan Academy: Algebra: Complex Numbers: Number Sets
Video first reviews what natural numbers, whole numbers, integers, rational numbers, irrational numbers and real numbers are. Gives examples of classifying numbers. [5:17]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Points on a Number Line
This video shows how to plot fractions, negative numbers, decimals, and fractions on a number line. Practice problems are available. [1:58]
Khan Academy
Khan Academy: Algebra: Square Roots and Real Numbers
This resource explains how to find the square root of real numbers using their prime factorizations and labeling the results as rational or irrational. [10:19]
Khan Academy
Khan Academy: Algebra: Complex Numbers: Number Sets 2
Video explains in which number sets in the real number system that a specific repeating decimal belongs. Shows method for rewriting the repeating decimal as a fraction. [6:52]
Math Planet
Math Planet: Perfect Squares and Square Roots
Students learn how to approximate square roots through class notes and a video lesson.
Virtual Nerd
Virtual Nerd: What's an Irrational Number?
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]
Virtual Nerd
Virtual Nerd: What's a Real Number?
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]
Khan Academy
Khan Academy: Approximating Square Roots to Hundredths
Learn how to approximate the decimal value of square root of 45 without using a calculator. [7:11]
Khan Academy
Khan Academy: Comparing Irrational Numbers With Radicals
Learn how to sort irrational numbers with radicals from least to greatest without using a calculator. [5:28]
Virtual Nerd
Virtual Nerd: What Is the Number Line?
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]
Sophia Learning
Sophia: Irrational Numbers
The mathematics resource includes a video lesson that explores irrational numbers. The square root of two and pi are included.
Sophia Learning
Sophia: Irrational Numbers
Explore and determine how to recognize an irrational number and assess learning with a quiz.
Other
Algebra2go: Classifying Real Numbers
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]
Khan Academy
Khan Academy: Intro to Percentages: Ordering Numeric Expressions
In this lesson students learn about ordering numbers expressed as decimals, fractions, and percentages.
Khan Academy
Khan Academy: Number Sets: Number Sets 2
This video explains in which number sets in the real number system a specific repeating decimal belongs.
Khan Academy
Khan Academy: Decimals on a Number Line
Conceptualizing decimals and place notation: decimals on a number line.
Study Pug
Study Pug: Express Linear Inequalities Graphically and Algebraically
Linear inequalities can be represented both graphically and algebraically. In this video, you will learn how to express linear inequalities as an equation and on a number line. [8:15]
Khan Academy
Khan Academy: Classifying Numbers: Rational and Irrational
Given a set of numbers, learn how to tell which are rational and which are irrational. [2:17]
Khan Academy
Khan Academy: Intro to Rational and Irrational Numbers
Explains what rational and irrational numbers are and the difference between them. [5:55]
Khan Academy
Khan Academy: Comparing Irrational Numbers With Radicals
Learn how to sort a bunch of numbers from least to greatest without using a calculator.
Sophia Learning
Sophia: Rational and Irrational Numbers
In this lesson, students will learn Rational and Irrational Numbers.
Sector Matemática
Sector Matematica: Orden en Q (Numeros Racionales)
This video tutorial shows how to compare several rational numbers. [4:08]
McGraw Hill
Glencoe Online Learning Center: Personal Tutor: Estimate Square Roots
This step-by-step example explores how to use rational approximations of irrational numbers to compare the size of irrational numbers.