Khan Academy
Khan Academy: Factor Polynomials Using Structure
Factor 'advanced' polynomials (i.e. polynomials of various degrees and or with two variables) using special product factorization methods.
National Council of Teachers of Mathematics
The Math Forum: Finding the Greatest Common Factor of Two Numbers
Math Forum response to question about finding the greatest common factor by using the factoring tree method.
Purple Math
Purplemath: Lcm & Gcf
Purplemath shows an easy and orderly way to determine the GCF and LCM of any two numbers. Even large numbers won't be a challenge with this method.
Soft Schools
Soft Schools: Greatest Common Factor Worksheet
Find the greatest common factor between two numbers. You may set the total number of problems per page, the minimum and maximum numbers, and an answer key is optional.
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.
National Council of Teachers of Mathematics
Nctm: Illuminations: Factorize
With this activity, you can visually explore the concept of factors by creating rectangular arrays. The length and width of the array are factors of your number.
CK-12 Foundation
Ck 12: Find Imaginary Solutions: Fundamental Theorem of Algebra
[Free Registration/Login may be required to access all resource tools.] Here you will learn about the Fundamental Theorem of Algebra, and how to apply it to various functions. You will also review using the quadratic equation to find...
Math Planet
Math Planet: Monomials and Adding or Subtracting Polynomials
Gain an understanding of how to add or subtract polynomials by viewing an example and a video lesson.
Alabama Learning Exchange
Alex: Factoring Fanatic
This activity is designed to give students practice in "finding" the correct factors to use when attempting to factor a trinomial. The students are provided with a Tic-Tac sheet to help them discover the relationship or pattern between...
Texas Education Agency
Texas Gateway: Applying the Order of Operations
Given a numerical expression including whole number exponents and prime factorization, students will use the order of operations to generate an equivalent expression.
Khan Academy
Khan Academy: Solve Equations Using Structure
Solve advanced equations by strategically using quadratic factorization methods. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Factor Quadratic Expressions With Negative Coefficients
[Free Registration/Login may be required to access all resource tools.] Factor quadratic expressions in which the coefficients a, b, and/or c are negative. Students can watch videos and follow along with notes. There is also practice...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Greatest Common Factor 2
Twenty-four problems present a variety of problems working with finding the greatest common factor and finding prime factorizations. They are given with each step to the solution cleverly revealed one at a time. You can work each step of...
Google
Google for Education: Measuring Complexity of Function or Algorithm
In this lesson, students learn how to measure the complexity of the function or algorithm in a math problem and understand how this applies to real world situations.
Cuemath
Cuemath: Square Root of 98
In this mini-lesson, learn how to find the square root of 98 using various methods.
Math Planet
Math Planet: Polynomial Equations in Factored Form
All equations are composed of polynomials. If you know how to solve equations containing polynomials of the first degree, then you can solve equations of higher degree. One way to solve a polynomial equation is to use the zero-product...
George Mason University
Margo Mankus: Investigating Lcm and Gcf Using Rods
This lesson plan is for an activity using rods (Cuisenaire Bars) to help students understand the concept of factors, in particular the LCM and GCF of two numbers.
Cuemath
Cuemath: Factors
A factor of a number in math is a number that divides the given number. Factors are used in many situations in daily life. This article explains factors and how to find factors using multiplication and division. Included are solved...
Cuemath
Cuemath: Least Common Multiple
Learn about the properties of Least Common Multiples (LCM) and the three methods to find the LCM. Included are solved examples and interactive problems for review.
Khan Academy
Khan Academy: Solve Equations Using Structure
Solve advanced equations by strategically using quadratic factorization methods.
Texas A&M University
Wtamu Virtual Math Lab: Intermediate Algebra
This site is a tutorial for students in algebra 2 or for those who need a refresher. The site has explanations, definitions, examples, practice problems and practice tests are found covering topics such as linear equations, graphing,...
National Council of Teachers of Mathematics
Nctm: Factor Game
Fun math game tests your factoring ability.
University of Cambridge
University of Cambridge: Nrich: Grouping Goodies
On this one page website sharpen your logic and factor skills while working on this challenge. The solution is available to double check your solution.
AAA Math
Aaa Math: Least Common Multiple
This tutorial offers an explanation of least common multiples, practice finding them and a game to play. There is a lot of information available at this location.