Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Factorize

For Students 3rd - 8th
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.
Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Algebra Tiles

For Students 9th - 10th Standards
This resource is about factoring linear and quadratic expressions in one variable, evaluating them at a given value of the variable, multiplying factors to find the expanded form of the expression, and solving linear and quadratic...
Activity
Help Algebra

Help algebra.com: Steps for Factoring Trinomials

For Students 9th - 10th
Ever have trouble knowing where to start factoring? This summary gives steps for how to factor and tips on what to look for in the quadratics.
Whiteboard
ClassFlow

Class Flow: Factoring Trinomials

For Teachers 6th - 9th
[Free Registration/Login Required] This flipchart shows a process for factoring trinomials. It includes a partner activity and questions that can be used with the Activotes.
Activity
Wolfram Research

Wolfram Mathworld: Polynomial Factorization

For Students 9th - 10th Standards
This site discusses factoring of polynomials, giving a general definition, and many links to satisfy unfamiliar terminology. There are however very few examples.
Activity
Interactive Mathematics

Interactive Mathematics: Common Factor & Difference of Squares

For Students 9th - 10th
These easy to follow examples demonstrate how to factor algebraic expression using GCF and difference of squares.
Activity
Math Medics

S.o.s. Math: Algebra

For Students 9th - 10th Standards
This lesson provides basic instruction on the major concepts in algebra. Content includes a focus on fractions, units of conversion, complex numbers, quadratic equations, factorization and roots of polynomials, solving equations, systems...
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Greatest Common Factor 2

For Students 9th - 10th Standards
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...
eBook
Khan Academy

Khan Academy: Intro to Factors & Divisibility

For Students 9th - 10th Standards
Learn what it means for polynomials to be factors of other polynomials or to be divisible by them.
Unknown Type
Khan Academy

Khan Academy: Factors & Divisibility

For Students 9th - 10th Standards
Students practice multiple-choice problems with factors and divisibility.
Activity
Other

College of Early Learning: Algebra Review

For Students 9th - 10th Standards
This site uses pictures to discuss dimension and base. The algebraic naming of measurements is included as well as factoring polynomial numbers.
Interactive
Other

Interactive Algebra

For Students 9th - 10th
This interactive site allows you to practice several algebraic concepts, including solving equations, factoring, and graphing. Problems are randomly generated and allow unlimited practice. Each link contains buttons that allow you to get...
Website
Wolfram Research

Wolfram Math World: Algebra

For Students 9th - 10th Standards
MathWorld provides a basic overview of Algebra. Includes a few formulas and many links to related topics.
Activity
Lawrence Hall of Science

The Math Page: Skill in Algebra: Common Factor

For Students 9th - 10th
Here is a site that thoroughly explains many topics related to factoring out the greatest common factor from a sum or a polynomial expression. There are example problems, problems for the student to attempt, and answers to the student...
Handout
Math Medics

S.o.s. Math: Fundamental Theorem of Algebra

For Students 9th - 10th Standards
This lesson takes a look at the Fundamental Theorem of Algebra. It gives information on solving multiplicity of roots and quadratic polynomials. Also gives a brief history and provides some learning exercises to practice.
Unit Plan
CK-12 Foundation

Ck 12: Find Imaginary Solutions: Fundamental Theorem of Algebra

For Students 11th - 12th Standards
[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...
Interactive
Lawrence Hall of Science

The Math Page: Topics in Pre Calculus: Quadratics

For Students 9th - 10th Standards
Here is a site that clearly and thoroughly explains quadratic functions, including graphing functions and solving equations using factoring. There are example problems solved, problems for the student to attempt, and answers to the...
Unit Plan
Mangahigh

Mangahigh: Algebra: Factor Using a Common Expression

For Students 9th - 10th Standards
Students explore an interactive tutorial on factoring and then practice their knowledge by attempting ten questions that increase in difficulty level.
Unit Plan
CK-12 Foundation

Ck 12: Analysis: Fundamental Theorem of Algebra

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson shows you how to find any solution, including imaginary ones, to a polynomial. Students examine guided notes, review guided practice, watch instructional...
Activity
Other

Dans Math: Lessons: Intermediate Algebra

For Students 9th - 10th Standards
College professor Dan Bach presents a review of algebra concepts, including factoring, quadratic equations, and graphing parabolas. The examples are detailed, but easy to follow. This is a good site for reviewing before tests and quizzes.
Handout
Purple Math

Purplemath: Partial Fraction Decomposition: General Techniques

For Students 9th - 10th Standards
Partial-fraction decomposition is the process of starting with the simplified answer and taking it back apart, of "decomposing" the final expression into its initial polynomial fractions. This reference material demonstrates the...
Website
Discovery Education

Discovery Education: Web Math: Algebra

For Students 9th - 10th
This WebMath site provides links to tutorials and lessons in both Algebra I and II. Links to topics such as factoring, solving equations, polynomials, simplifying equations, graphing, and much more.
Activity
Interactive Mathematics

Interactive Mathematics: Special Products

For Students 9th - 10th
Several special products are presented here, including expressions with two variables, squaring binomials and trinomials, and products involving cubes.
Activity
Purple Math

Purplemath: Factor Theorem

For Students 9th - 10th Standards
Purplemath.com discusses the Factor Theorem, explaining its relationship to the Remainder Theorem. The lesson has a link to synthetic division, a key to discovering if a value is a root.