Math Meeting
Adding and Subtracting - Negative Numbers
Here is a video that adds visual context and a steady stream of step-by-step instructions for adding and subtracting negative integers, with the help of a number line.
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What's a Perfect Square?
What makes an integer a perfect square? Want to know the answer? Do the numbers 4, 9, 16, 25, and 36 mean anything? Is the light bulb glowing bright? Yes, anytime you square an integer, the value is a perfect square. That makes sense!
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How Do You Find the Prime Factorization of a Number Using a Tree?
A factor tree? What's a factor tree? A tree of factors? A factor tree is a method use to do the prime factorization of an integer. It's not complicated. Watch the teacher as she explains the steps and shows how to write the answer as a...
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How Do You Find the Greatest Common Factor of Three Numbers?
Use prime factorization to find the greatest common factor of three given values. What are the factors that all three given numbers have in common? Identify them, and then multiply together to get the greatest common factor. Just like...
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How Do You Find the Greatest Common Factor of Monomials?
Use prime factorization to find the greatest common factor of four given values. What are the factors that all four given values have in common? Identify them, and then multiply together to get the greatest common factor. Just like that....
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How Do You Do Long Multiplication?
Multiplying multi-digit numbers without a calculator. First, make sure you align the numbers properly. It's not just about multiplying, there's carrying numbers and adding numbers and placeholders. You can do it, just remember to line up...
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What's an Integer?
Introduce your class to integers with this video. This video provides a definition of integers, using examples of numbers that are integers and numbers that are not. A straightforward video that could be used to teach the concept as well...
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How Do You Add Integers Using a Number Line?
Confused about adding integers? Use a number line to help you get a visual on which way to move according to the sign of the numbers. Negative means you move left on the number line and then of course positive numbers mean you move to...
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How Do You Multiply a Two-Digit Number by a Two-Digit Number Using Partial Products?
What are partial products? The teacher uses a geometric model to illustrate how to break up double digit numbers to find the product of the numbers being multiplied. It's a good visual for your students who might need to see how the math...
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How Do You Multiply a Two-Digit Number by a One-Digit Number?
The instructor uses diagrams to illustrate a model of how to multiply 3 times 26. Multiplication is a form of addition. She states that the larger rectangles represent 10 and the small squares have a value of 1. She explains how to get...
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What's Another Definition for an Integer?
Break down integers with this video. A teacher gives a basic definition and provides several examples of integers. The examples cover numbers that are integers as well as numbers that are not integers. A concise video, this resource...
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How Do You Distribute With Whole Numbers and Fractions?
This lesson on the distributive property is probably a review for algebra I mathematicians. But it doesn't hurt to reinforce this skill of multiplying a whole number times the sum of fractions. The teacher shows two ways to multiply the...
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What's Another Definition for Prime and Composite Numbers?
Simply put, a prime number is a number that is divisible only by one and itself. All other numbers are composite.
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How Do You Estimate the Square Root of a Non-Perfect Square?
Find the square root of a number that is not a perfect square, without using a calculator. In this video, the instructor will show how to estimate to get the approximate value of the square root of a number that is not a perfect square....
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Odd Numbers
Peter from the number underground is here to tell your class a math secret. He explains odd numbers. This clip is super cute and engaging plus it does a great job providing rules to determine if a number is odd or not. The math...
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What's Another Definition for an Integer?
Break down integers with this video. A teacher gives a basic definition and provides several examples of integers. The examples cover numbers that are integers as well as numbers that are not integers. A concise video, this resource...
Curated OER
What's an Integer?
Introduce your class to integers with this video. This video provides a definition of integers, using examples of numbers that are integers and numbers that are not. A straightforward video that could be used to teach the concept as well...
Curated OER
How Do You Find a Missing Term in a Polynomial?
The instructor does a very good job of explaining all the things you need to do to find the integer values of this given trinomial. She demonstrates how to set up a template to be able to check the signs of the terms. Next step, what are...
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How Do You Subtract Polynomials Vertically?
Subtract polynomials? Huh? First off find the additive inverse of the number you are subtracting. Next rewrite the polynomials one on top of the other. Make sure to line up the like terms and then write in placeholders. Now add the terms...
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What's Another Definition for Prime and Composite Numbers?
Simply put, a prime number is a number that is divisible only by one and itself. All other numbers are composite.
Curated OER
How Do You Add Polynomials Vertically?
The instructor demonstrates how to line up two polynomials vertically to add them together. She emphasizes lining up the terms with the same powers. She also identifies some places where there is no term and shows how to write a...
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How Do You Find All the Factors of a Number?
How do you find the factors of a given number? The teacher will show you how to use a table, test out your answers, and then write all your factors in a list. If you know the divisibility rules, that will also help you out.
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How Do You Multiply a Two-Digit Number by a Two-Digit Number Using Partial Products?
What are partial products? The teacher uses a geometric model to illustrate how to break up double digit numbers to find the product of the numbers being multiplied. It's one method and is a good visual for your students who might need...
Curated OER
How Do You Multiply a Two-Digit Number by a One-Digit Number?
The instructor uses diagrams to illustrate a model of how to multiply 3 times 26. Multiplication is a form of addition. She states that the larger rectangles represents 10 and the small squares have a value of one. She explains how to...