Website
Cool Math

Coolmath: Solving Quadratics a Brief Intro

For Students 9th - 10th
This CoolMath resource introduces student to quadratic equations.
Unit Plan
Khan Academy

Khan Academy: Difference of Squares

For Students 9th - 10th Standards
Factor quadratic expressions of the general difference of squares form. The factored expressions have the general form (ax+b)(ax-b). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
Unit Plan
CK-12 Foundation

Ck 12: Factor Quadratic Expressions With Negative Coefficients

For Students 9th - 10th
[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...
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Khan Academy

Khan Academy: Factor Polynomials: Common Factor

For Students 9th - 10th Standards
Practice factoring polynomials with a common factor.
Unit Plan
Khan Academy

Khan Academy: Difference of Squares Intro

For Students 9th - 10th
Factor quadratic expressions into the special products of the general form (x+a)(x-a). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Math Planet

Math Planet: Polynomial Equations in Factored Form

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

Khan Academy: Factor Polynomials: Quadratic Methods

For Students 9th - 10th Standards
Factor polynomials that are the product of a monomial and a quadratic expression, then further factor the quadratic expression. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or...
Handout
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Prime Factorization

For Students 9th - 10th Standards
Find a quick, concise explanation of how to find the unique prime factorization of a number. An example is given and clearly explained.
Activity
Wyzant

Wyzant: Factoring Completely

For Students 9th - 10th Standards
Learners complete a worksheet on factoring expressions. An example problem and answer sheet is included.
Activity
Wyzant

Wyzant: Solve by Factoring Worksheet

For Students 9th - 10th
Learners complete a worksheet on solving equations by factoring. An example problem and answer sheet is included.
Unit Plan
Sophia Learning

Sophia: Factoring Quadratic Equations When a ? 1: Lesson 5

For Students 9th - 10th
This lesson will review how to factor and solve a quadratic equation when a ? 1. It is 5 of 5 in the series titled "Factoring Quadratic Equations when a ? 1."
Activity
Wyzant

Wyzant: Factoring Calculator

For Students 9th - 10th Standards
The calculator factors expressions by expanding and combining like terms, dividing a greatest common factor, and identifying between two squares or factorable trinomials. An example expression and quick-start guide are included.
Activity
Free Math Help

Free Math Help: Factoring Numbers

For Students 9th - 10th Standards
Learners examine how to factor a number. The lesson teaches students about the basic ideas of factoring. The resource includes detailed explanations and a message board to post additional questions.
Unit Plan
Khan Academy

Khan Academy: Solve Quadratics by Factoring (Intro)

For Students 9th - 10th
Solve quadratic equations of the form x^2+bx+c=0 that can be rewritten according to their linear factors. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Algebra: Quadratic Equations

For Students 9th - 10th Standards
Here is a site that clearly and thoroughly explains the quadratic equations, including how to solve them by factoring, completing the square, and using the quadratic formula. There are example problems solved, problems for the student to...
Interactive
Calculator Soup

Calculator Soup: Factoring Calculator

For Students 9th - 10th
The factoring calculator finds the factors and factor pairs of a positive or negative number. Enter an integer number to find its factors.
Activity
Purple Math

Purplemath: Factoring Numbers

For Students 3rd - 8th Standards
Visit Purplemath.com for a lesson on finding the prime factorization of numbers. Numerous examples are worked through step by step.
Unit Plan
Homeschool Math

Homeschool Math: Prime Factorization of Three Digit Numbers

For Teachers 5th
This lesson shows examples of how to get started with the prime factorization of three-digit or larger numbers, using a factor tree. includes numerous practice exercises.
Interactive
Calculator Soup

Calculator Soup: Prime Factorization Calculator

For Students 9th - 10th
Use this prime numbers calculator to find all prime factors of a given integer number up to 1 trillion. This calculator presents prime factors of a number, prime decomposition in exponential form, CSV (comma separated values) list of...
Activity
Help Algebra

Help algebra.com: Solving Quadratics by Factoring

For Students 9th - 10th Standards
Tips for factoring quadratics are given and demonstrated in several examples. The examples include quadratics that have both two and three terms.
Activity
University of Saskatchewan (Canada)

University of Saskatchewan: Factoring Polynomials Given One Root

For Students 9th - 10th
Contains a few example problems on factoring polynomials with a given root.
Lesson Plan
Science and Mathematics Initiative for Learning Enhancement (SMILE)

Smile: Algebra Tiles Lesson Plan

For Teachers 9th - 10th
This is an algebra tiles lesson in factoring polynomials. The link found a the bottom of the page links to an index of over two hundred lesson plans in various mathematical topics.
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Soft Schools

Soft Schools: Factors Worksheet

For Students 3rd - 8th Standards
Generate a worksheet where students find all the factors of a number. When you create the worksheet, set the minimum and maximum number and the total number of problems. An answer key is optional.
Interactive
Calculator Soup

Calculator Soup: Greatest Common Factor Gcf Calculator

For Students 6th - 8th Standards
Calculate GCF, GCD, and HCF of a set of two or more numbers and see the work using factorization. An interactive calculator, explanations, and examples are included.

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