Other
Help With Fractions: The Greatest Common Factor
Two different methods of finding the greatest common factor are explained at this one page website. It is very easy to follow the step by step directions.
Other
Help With Fractions: Reducing Fractions by Factorization
The rules for reducing fractions using factorization are clearly explained at this website. This is an excellent place to get step by step explanations for working with fractions.
Annenberg Foundation
Annenberg Learner: Insights Into Algebra 1. Workshop 8
Students will construct a mathematical model of a gear to determine the number of revolutions.
Other
Everyday Math: Factor Bingo
If you love playing Bingo, then you will enjoy this interactive game that focuses on factors and number concepts. Learners select the numbers for the bingo card then, try to find the factors that match. Audio is provided for game...
AAA Math
Aaa Math: Prime and Composite Numbers
This math tutorial offers an explanation of prime and composite numbers and lets students practice finding them.
Khan Academy
Khan Academy: Factors and Multiples Intro
Explains what factors are and uses images to visualize the different factors of whole numbers. Next, discusses how to find factors without images and how to identify factor pairs. Multiples are then explained and how they relate to...
National Council of Teachers of Mathematics
Nctm: Illuminations: Factorize
This resource investigates the concept of factors by creating rectangular arrays. The interactive tool allows learners to relate area to multiplication.
University of Waterloo (Canada)
Wired Math: Primes and Prime Factors [Pdf]
Explore primes, prime factors, and composites using this collection of worksheets. Lots of detailed examples, interesting math facts, and colorful visuals. Acrobat Reader required.
Purple Math
Purplemath: Algebra Resources
Purplemath contains about 40 different lessons on various algebra topics. The lessons are divided into five different sections: preliminary topics, beginning algebra, intermediate algebra, advanced algebra, and word problems. The lessons...
Cool Math
Coolmath: Factoring Polynomials What's a Factor Again?
Take a quick look at what a factor is.
University of Cambridge
University of Cambridge: Maths and Sports: Olympic Logic
Four sporty brainteasers in the context of fencing, hockey, football and international medal tables. This activity challenges students to be resourceful, to think logically and to work systematically, and is designed to be accessible to...
Math Planet
Math Planet: Factorization and Prime Numbers
Gain an understanding of how to factor prime numbers by viewing examples and a video lesson.
Khan Academy
Khan Academy: Factor Pairs
Practice finding factor pairs for whole numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Identify Factors and Multiples
Demonstrate understanding of factors and multiples. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Illustrative Mathematics
Illustrative Mathematics: 4.oa the Locker Game
The purpose of this instructional task is for students to deepen their understanding of factors and multiples of whole numbers. Aligns with 4.OA.B.4.
Illustrative Mathematics
Illustrative Mathematics: 6.ns Bake Sale
This task asks students to apply the concepts of factors and common factors in a real-world context. Aligns with 6.NS.B.4.
Illustrative Mathematics
Illustrative Mathematics: 6.ns Factors and Common Factors
This task asks students to apply the concepts of factors, common factors, and the greatest common factor in an abstract context. Aligns with 6.NS.B.4.
Mathigon
Mathigon: Math Foundations: Divisibility and Primes: Factors and Multiples
This lesson focuses on factors and multiples; it explains each and provides practice activities and a quiz.
SEN Teacher
Sen Teacher: Multiplication Grid
Customize and print out a multiplication grid for use as a classroom handout. You can select grids of 10 or 12 and color or black and white.
Homeschool Math
Homeschool Math: Prime Factorization
This site contains a free lesson on Prime Factorization in which students learn by doing practice problems.
Khan Academy
Khan Academy: Find Missing Factors (1 Digit Multiplication)
Find missing factors in 1-digit multiplication problems. Products are less than or equal to 100. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Algebra: Single Variable Division Equations
[Free Registration/Login may be required to access all resource tools.] Solve single variable equations involving division by applying inverse operations.
National Geographic
National Geographic: 3 Pound Goldfish Found How'd It Get So Big?
Find out about factors that affected this huge goldfish found in Michigan.
CK-12 Foundation
Ck 12: Algebra: Problem Solving Models
[Free Registration/Login may be required to access all resource tools.] Learn how to solve problems using a step-by-step strategy.