Instructional Video4:24
Curated OER

How Do You Turn a Terminating Decimal Into a Fraction?

For Teachers 6th - 12th
The instructor demonstrates how to convert a terminating decimal to a fraction. She calculates a base 10 denominator and then reduces the fraction to simplest form.
Instructional Video0:07
Curated OER

How Do You Solve a Word Problem Using the Elimination by Subtraction Method?

For Teachers 6th - 12th
Use word problems to teach systems of equations! The instructor in this video demonstrates how to solve a word problem using a system of equations and the elimination by subtraction method. She goes through each step, carefully...
Instructional Video5:24
Curated OER

How Do You Factor a 6-Term Polynomial by Grouping?

For Teachers 8th - 11th
An example of factoring by grouping is shown in this video. We look at a polynomial with six terms, by grouping the terms into two trinomials with common factors. Then we factor a couple times so that we factor completely.
Instructional Video2:31
Curated OER

How Do You Solve a Word Problem by Dividing Monomials?

For Teachers 6th - 8th
A word problem, a triangle, monomials, exponents, what to do? The instructor explains how to set up this ratio in order to solve the problem and express it as a monomial in simplest form.
Instructional Video5:07
Curated OER

How Do You Find Equivalent Ratios?

For Teachers 6th - 8th
Ratios are a comparison of numbers. So given a ratio, how can an equivalent ratio be written? Just multiply or divide, both the numerator and the denominator, by the same value. The result will be different numbers, but equal values that...
Instructional Video3:03
Curated OER

How Do You Find the Greatest Common Factor If There are No Common Factors?

For Teachers 6th - 9th
Use prime factorization to find the greatest common factor of three given values. Okay. But what if there doesn't seem to be any integer that is common in all three given values? Well, then, the greatest common factor must be 1. Not sure...
Instructional Video3:42
Curated OER

How Do You Turn a Terminating Decimal Into a Fraction?

For Teachers 7th - 9th
The instructor demonstrates how to convert a terminating decimal to a fraction. She calculates a base 10 denominator and then reduces the fraction to simplest form.
Instructional Video3:27
Curated OER

How Do You Subtract Fractions with Different Denominators?

For Teachers 4th - 7th
Combining fractions with unlike denominators. Wait! You can't do that! You have to have common denominators to combine the numerator of fractions. Here's a quick review of changing the denominator by multiplying each fraction by that...
Instructional Video13:36
Real Engineering

The History of Iron and Steel

For Students 9th - Higher Ed
Steel a great resource to teach your class all about iron. Viewers of an engaging video see how the production of wrought iron, cast iron, and steel have changed over time. The video also explains some societal advances due to these...
Instructional Video0:51
Howard Hughes Medical Institute

Somatic Cell Nuclear Transfer Animation

For Students 9th - 12th Standards
One cloning technique is somatic cell nuclear transfer (SCNT). Observe the process in action through an animated video. Review the applications of the process for both therapeutic cloning and cloning of an individual.
Instructional Video5:06
TED-Ed

How Do Crystals Work?

For Students 6th - 12th Standards
What do amazonite, heliotrope, carnelian, and diamonds have in common? There are all crystals and members of one of the six crystal families. Viewers of a fascinating short video learn about the molecular structure of crystals that cause...
Instructional Video4:33
Curated OER

How Do You Turn an Integer Into a Fraction?

For Teachers 6th - 12th
So you want to write an integer as a fraction? Well, all you have to do, is write the integer as the numerator with a denominator of 1.
Instructional Video3:56
Curated OER

How Do You Turn an Integer Into a Fraction?

For Teachers 5th - 7th
So you want to write an integer as a fraction? Well, all you have to do, is write the integer as the numerator with a denominator of 1.
Instructional Video
Math TV

Math tv.com: Properties of Numbers: Associative Property

For Students 6th - 8th Standards
A math teacher and several students show you how to simplify expressions using the associative property. Several video demonstrations offer clear, step-by-step solutions to eight problems.
Instructional Video
Khan Academy

Khan Academy: Using Associative Property to Simplify Multiplication

For Students 3rd Standards
Sal Khan uses the associative property to multiply 2-digit numbers by 1-digit numbers. [4:30]
Instructional Video
Math Mammoth

Math Mammoth: Commutative and Associative Properties

For Students 6th - 8th Standards
Explains what the commutative and associative properties of addition and multiplication are and investigates whether they work for subtraction and division. The video then looks at examples to see if expressions are equal and simplifies...
Instructional Video
Imagine Learning Classroom

Learn Zillion: Combine Parts of an Expression: Using the Associative Property

For Students 6th
In this lesson, you will learn how to combine parts of an expression using the associative property. [4:25]
Instructional Video
Virtual Nerd

Virtual Nerd: What Are the Associative Properties of Addition and Multiplication

For Students 9th - 10th Standards
Take a look at this instructional video to learn about one of the most fundamental properties of math, the associative property. [5:13]
Instructional Video
Virtual Nerd

Virtual Nerd: How Do You Use the Associative Property?

For Students 9th - 10th
Watch this video tutorial to learn how to apply the associative property of addition. [1:07]
Instructional Video
Sophia Learning

Sophia: Addition Is Associative

For Students 6th - 8th
Explore the associative property of addition and take a quiz to assess learning.
Instructional Video
Art of Problem Solving

Art of Problem Solving: Associative Property of Addition

For Students 9th - 10th
Video tutorial uses examples to reinforce understanding of the Associative Property of addition. [3:09]
Instructional Video
Khan Academy

Khan Academy: Associative Property of Multiplication

For Students 3rd Standards
Sal Khan regroups numbers to simplify multiplication problems. [3:34]
Instructional Video
Khan Academy

Khan Academy: Associative Property of Addition

For Students 4th
Demonstrates the associative law of addition and how rearranging the numbers and parentheses does not change the sum. [2:10]
Instructional Video
Loyola University Chicago

Math Flix: Variables: Properties

For Students 5th - 8th Standards
This QuickTime movie provides excellent explanations of the Distributive, Commutative, and Associative Properties using variables with examples. As you watch and listen to the teacher and student interact it helps clarify the thinking...

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