Krista King Math
Distributive Property, Binomial Multiplication
The distributive property and FOIL are the same when it comes to binomial multiplication. The video demonstrates binomial multiplication using the distributive property. The presenter shows the general case and provides two...
Krista King Math
Distributive Property, Fractions
Does the distributive property work the same with fractions? The short video provides examples of the distributive property using algebraic fractions. The resource provides two examples of distributing fractions over sums also involving...
Krista King Math
Transitive Property
Two expressions equal to a third are also equal. The resource provides a short explanation of the transitive property. The video gives examples of the property in action.
Krista King Math
Commutative Property
Connect the commutative property to commuting. The quick video shows how to use the commutative property to write sums and products in a different way. It provides examples to show that the property only works for addition and...
Krista King Math
Associative Property
It does not matter how you group numbers in addition and subtraction. The short video provides the definition for the associative property. It includes examples to show the associative property holds true for addition and multiplication.
TED-Ed
Group Theory 101: How to Play a Rubik’s Cube Like a Piano
The strong connections between math and music are explored in this short video that uses group theory to visualize musical chords. Makes you wonder what Arthur Rubinstein would have thought of all this.
Curated OER
How Do You Find the Scale of a Model?
A model car, a life size car, now compare their sizes. Hmmm. Ok, set up a proportion and then figure out a ratio, and now you can express the relationship in terms of scale. Watch this video and the teacher will demonstrate just how to...
Curated OER
How Do You Solve a Word Problem Using an Inequality Where You're Multiplying Positive Fractions?
Ingrid got some good advice from her father about building a bridge out of pasta. Now she has to do some calculations to build a strong pasta bridge. Figure out how tall she can build her bridge based on a given length. Two given values...
Curated OER
How Do You Solve a Word Problem Using an Inequality Where You're Multiplying Negative Fractions?
It just doesn't seem right to lose points when answer a question incorrectly. Well, that's what this word problem is all about. So calculate how many incorrect answers the team gave. Don't forget to flip the inequality when dealing with...
Curated OER
How Do You Solve an Equation With Fractions With The Same Denominators Using Addition?
You have an equation with an unknown variable and fractions. How do you solve this kind of equation? You can do it using the addition property of equality to first isolate the variable. Then, combine the fractions and since they have a...
Curated OER
How Do You Use Multiplication With Positive Numbers to Solve an Inequality Problem?
Broken lights at the skating rink? Are there enough not broken to be able to see well enough to skate? Set up this real-world word problem and find the total number of lights in the skating rink. Two given values and one variable. Solve...
Curated OER
How Do You Use Multiplication with Negative Numbers to Solve an Inequality Word Problem?
Solve this real world word problem in just one written step. The original inequality is a division problem, so to solve it, use the multiplication property of inequality. Was the problem solved by multiplying a negative number? Yes! So...
Curated OER
How Do You Solve an Inequality by Multiplying by a Positive Number?
Instruct your pupils on solving inequalities by multiplying by positive numbers with this video. The video presents how to do just this in step-by-step fashion. A straightforward video, this could be used to supplement your lesson during...
Curated OER
How Do You Use Division With Positive Numbers to Solve an Inequality Word Problem?
A word problem with one variable and two given numbers. This word problem seems doable from the start. Wait, it's an inequality. Don't worry about that piece, just get the expression written and do the math. Watch this video and see how...
Curated OER
How Do You Use Division With Negative Numbers to Solve an Inequality Word Problem?
A word problem that needs to be written as an inequality to solve. This expression seems pretty straightforward and only takes one step to solve. But wait, the division property was used with a negative number so the inequality sign has...
Curated OER
How Do You Solve an Inequality by Dividing by a Positive Number?
Is your class working on inequalities? If so, you might be interested in this video. This well-made video shows how to solve an inequality by dividing by a positive number. An instructor details each step, writing out her work as she...
Curated OER
How Do You Solve a Word Problem Using an Inequality With Variables on Both Sides?
Don't skip this word problem! Take one piece at a time in writing out this inequality. Once you have an expression that represents the words in this inequality, the rest will seem easy. So watch this video to get a better understanding...
Curated OER
How Do You Solve an Inequality With Variables on Both Sides?
A direct instructional video of how to solve an inequality when you have the same variable on both sides of the inequality sign, this resource could be used in class or at home.
Curated OER
How Do You Solve and Graph a Two-Step Inequality?
Approach inequalities in a new way with this video! This video gives step-by-step instruction on how to solve a two step inequality and then graph the answer. Learners could use this video as a reference as they do homework, or you might...
Curated OER
How Do You Figure Out the Rate Traveled if You Know Distance and Time?
If you know two values and are looking for a third, you can set up an equation and solve to find your answer. In this problem you know distance and time, and you are looking for rate of speed. Use the distance formula to set up your...
Curated OER
How Do You Factor a Greatest Common Factor Out of an Expression?
What is the greatest common factor of two terms in an expression? First prime factor each of the terms. Then find the factors that they have in common. Multiply if needed. That is how to find the greatest common factor. Watch the video...
Curated OER
How Do You Solve a Word Problem with an Equation Using Multiplication?
One variable and two given values. Easy as pie, right? No, not for everyone. Word problems are often skipped over. This one is good for practicing. Identify the variable and figure out where the two given values go. Now solve.
Curated OER
How Do You Solve a Decimal Equation Using Addition?
Use the addition property of inequality to solve this problem. Since this is a subtraction problem, the opposite is used to isolate the variable. It's just a one-step solution. But don't forget this is a decimal problem so line up the...
Curated OER
What's the Zero Product Property?
It's hard to just give a verbal explanation of the zero product property in a way that would be understandable. So it would be best to just watch this video and see the teacher write it out on the whiteboard and explain things as she goes.