Corbett Maths
Prime Numbers
The only factor to consider in determining prime numbers is the factors of the number. Young mathematicians learn to identify prime numbers. They see that a prime number is any number with only one and itself as its factors.
Krista King Math
Multiples
Connect factorizations to the multiples of given numbers with a video that shows the first five multiples of different numbers. The instructor emphasizes the relationship between the multiples and the factors of the original number.
Krista King Math
Prime Factorization and Product of Primes
Demonstrate a method for finding the prime factorization of numbers using factor trees and a video that explains how to break a number down to its prime factors. The instructor reinforces the concept of factors by displaying the...
Krista King Math
Prime and Composite Numbers
Create an understanding of prime numbers with the class after watching a video that examines different numbers and recognizes prime numbers as being those that do not have other factors than one and itself. The narrator then...
Scholastic
Study Jams! Divisibility Rules
Learning division is a challenge for many young mathematicians, but this presentation on divisibility rules can make it much easier. Seven different rules are clearly explained and modeled with the support of multiple examples. Consider...
Math Playground
What is Prime Factorization?
A teacher describes how to find the prime factors of 525. She starts by describing how to use a factor tree to describe the factors of a number. Next, she uses increasingly difficult examples to illustrate this concept.
Math Playground
What is a Prime Number?
Review the characteristics of prime numbers. The narrator begins by defining factors and then goes on to explore the definition of prime numbers. This is a quick and easy way to review prime numbers.
Educreations
Dividing Using Friendly Numbers
Simplify division for young mathematicians by teaching them how to use friendly numbers when finding quotients. Three examples are presented in this instructional video that models the process of breaking large dividends into sums of...
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Recognizing Divisibility
This video explains how to test whether a number is divisible by a list of other numbers under 10. Practice problems are available. [6:26]
Math Antics
Math Antics: Prime Factorization
Math Antics offers video tutorials on various math topics. This video discusses the topic of prime factorization. [6:40]
Math Playground
Math Playground: What Is a Prime Number?
This video defines prime numbers by examining the concept of factors. [4:42]
Khan Academy
Khan Academy: Recognize Prime and Composite Numbers
Looks at how to recognize prime and composite numbers and ones that don't fit into either category. [4:39]
CK-12 Foundation
Ck 12: Elem Math: Finding the Minimum Number Given a Statement
[Free Registration/Login may be required to access all resource tools.] Video explaining how to find the smallest digit missing in a number that will make the given statement about the quotient true. [1:20]
CK-12 Foundation
Ck 12: Elem Math: Finding the Missing Number
[Free Registration/Login may be required to access all resource tools.] Video explaining how to find the digit missing in a number that will make the given statement about the quotient true. [1:58]
Khan Academy
Khan Academy: Prime Numbers
Discusses the properties of prime numbers and how to recognize them. [8:12] It includes a link to a practice exercise.
Imagine Learning Classroom
Learn Zillion: Determine if a Number Is a Multiple of 2, 3, or 6
In this lesson, you will learn to determine if a number is a multiple of 2, 3, or 6 by using divisibility rules. [6:11]
Imagine Learning Classroom
Learn Zillion: Determine if a Number Is a Multiple of 4 or 7
In this lesson, will learn to determine if a number is a multiple of 4 or 7 by using divisibility rules. [5:28]
Other
Math Tutor Dvd: Finding the Greatest Common Factor
This video tutorial shows how to find the greatest common factor of two numbers. [11:48]
Other
Math Tutor Dvd: Finding Factors of Numbers
Video lesson shows how to write down the factors of a number. Learn what a factor is and why it is important. Provides examples of finding factors of numbers to give practice. [8:37]
Other
Math Tutor Dvd: Prime Factorization: Finding Factors of a Number (Factoring)
Video lesson explores how to find the prime factors of a number and how to write the prime factorization down using a "factor tree". [13:09]
Khan Academy
Khan Academy: Divisibility and Factors: Finding Factors of a Number
In this video learn how to find the factors of a number.
Loyola University Chicago
Math Flix: Finding Factors of 126
This video provides an opportunity to see how you might go about finding the factors of a specific composite number, 126. As you watch and listen to the teacher and students interact it helps clarify the thinking behind applying this...
Loyola University Chicago
Math Flix: Prime Numbers: Sieve of Eratosthenes Part 2
This QuickTime movie continues using a hundreds chart to record all the prime numbers between 1 and 100 by eliminating all the composite numbers. As you watch and listen to the teacher and students interact it helps clarify the thinking...