Why U
Algebra 14 - Scatter Plots
Scatter plots are a powerful method of visualizing relations between sets of numeric values. As an example, trends in a binary relation between the height and weight of a group of people could be graphed and analyzed by using a scatter...
Curated Video
Solving Systems of Literal Equations
In this lesson, students will learn how to solve systems of literal equations, which are equations with variables representing unknown values. They will use properties of real numbers and inverse operations to isolate variables and find...
Curated Video
Solving Literal Equations using Properties of Real Numbers and Equality
In this video, students learn how to solve literal equations by using the properties of real numbers and equality. The teacher explains the steps involved in simplifying equations, such as using the distributive and associative...
Khan Academy
Square Roots And Real Numbers, Pre-Algebra
Sal works through several problems involving rational and irrational numbers and shows how to find the difference. This video is a good stepping stone for those preparing to take on more challenging algebra work.
Mathispower4u
Properties of Real Numbers
You'll probably learn properties properly after viewing a video that reviews the properties of real numbers, including the identity and inverse properties. Scholars watch a YouTube video that shows how to use the properties to evaluate...
Mathispower4u
Real Numbers
Real mathematicians have mastery of real numbers. Pupils learn about the classification of real numbers by watching a YouTube video. They also see how to compare real numbers and how to determine absolute value.
Mathispower4u
Identifying Sets of Real Numbers
Some numbers just want to be whole. Viewers of a short YouTube video learn how to classify real numbers as rational/irrational numbers, integers, whole numbers, and natural numbers. They see how graphic organizers can help visualize...
MinutePhysics
How to Count Infinity
To infinity, and beyond — but really, just between 0 and 1! Using illustrated examples, the narrator shows how all the infinity you could ever hope to find exists between the counting numbers 0 and 1.
PBS
A Hierarchy of Infinities
What's larger than infinity? Infinity plus one! Scholars learn about the different levels of infinity in the video that uses bijections as a way to show infinite sets as being the same size. They also and see that the set of real...
Curated OER
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...
Curated OER
How Do You Find the Volume of a Sphere?
The formula for the volume of a sphere is - volume equals four thirds pi times the radius cubed. That's a mouth-full. But if you are given the radius value of the sphere, all you have to do is plug it in and do the arithmetic. Just...
Curated OER
How Do You Find the Area of a Sector of a Circle?
How do you find the area of a sector of a circle? Use the formula of course. Then all you have to do is plug in the given values and do the math. Make sure you are following the rules of order of operation. The instructor will walk you...
Curated OER
Rational and Irrational Numbers
Irrational, rational, and terminating numbers are all covered in this math tutorial. The instructor uses a question from a math test to work through, showing how to compute and evaluate each answer to determine if the number given in...
Curated OER
What's a Real Number?
A real number is any number that you can find on a number line. This includes rational and irrational numbers, which means positive numbers, negative numbers, decimal numbers, square root numbers and even pi.
Curated OER
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...
Curated OER
How Do Different Categories of Numbers Compare To Each Other?
The teacher defines and writes a list of the different categories of numbers. But sometimes it's hard to keep all that organized. So she draws a diagram and explains further how the categories of numbers compare or relate to each other....
Curated OER
How Do You Find the Volume of a Sphere?
The formula for the volume of a sphere is volume equals four-thirds pi times the radius cubed. That's a mouth-full. But if you are given the radius value of the sphere, all you have to do is plug it in and do the arithmetic. Just...
Curated OER
How Do You Find the Surface Area of a Sphere?
What do a basketball, a bowling ball, and a ping pong ball all have in common? They are spheres. So how do you measure the surface area of a sphere? Yes, there is a formula and all you have to do is know one measurement of the sphere to...
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: Vi Hart: 9.999 Reasons That .999 = 1
Video exploring number theory concepts such as real, hyperreal, and surreal numbers, and infinity. [10:01]
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]
Other
Algebra2go: Properties of Real Numbers
Professor Perez's virtual classroom takes a look at the properties of real numbers: associative, commutative, distributive, identity, and inverse. [9:59]