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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Solving Problems by Factoring

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving quadratic equations by factoring.
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Unit Plan
CK-12 Foundation

Ck 12: Analysis: Methods for Solving Quadratic Functions

For Students 11th - 12th
[Free Registration/Login may be required to access all resource tools.] A review of the three major methods of solving quadratic functions for ''X'' intercepts.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factorization Using Difference of Squares

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Factor the difference of two squares and perfect square trinomials and solve quadratic polynomial equations by factoring.
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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.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factoring by Grouping

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Group terms in quadratic expressions to help completely factor them.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factoring by Grouping

For Students 8th - 9th
[Free Registration/Login may be required to access all resource tools.] Learn how to factor quadratic expressions by grouping.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factoring by Grouping

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Group terms in quadratic expressions to help completely factor them.
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Activity
Purple Math

Purplemath: Factoring Quadratics: The Simple Case

For Students 9th - 10th
This Purplemath lesson describes how to factor a trinomial. It also gives sample problems for the students to try interactively. The lesson expresses how to check the answer by multiplying through.
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Unit Plan
Stefan Warner and Steven R. Costenoble

Finite Mathematics & Applied Calculus: Polynomial Equations

For Students 9th - 10th
The tutorial investigates how to solve polynomial equations. Students learn about the concept through class notes, examples, and practice problems. Topics include solving quadratic equations, factoring, and the quadratic formula.
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Unknown Type
Khan Academy

Khan Academy: 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.
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Unit Plan
CK-12 Foundation

Ck 12: Analysis: Methods for Solving Quadratic Functions

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson applies factoring a quadratic equation to other types of polynomials that are in "quadratic form."
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Activity
Help Algebra

Help algebra.com: Quadratic Equations

For Students 9th - 10th Standards
This article gives a definition of quadratic equations, then demonstrates how to solve them. Factoring, completing the square and the quadratic formula are the methods described. The examples are accompanied by lists of steps for solving...
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Whiteboard
ClassFlow

Class Flow: Factoring Trinomials

For Teachers 9th - 10th
[Free Registration/Login Required] In this flipchart students are led on a discovery of the patterns found in factoring trinomials. They apply the patterns to factor.
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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...
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Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: Intermediate Algebra

For Students 9th - 10th
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,...
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Handout
Other

Brown Math: Solving Polynomial Equations

For Students 9th - 10th Standards
The many facets of factoring polynomials and solving polynomial equations are explained here in great detail. Taking students from basic definitions through the Descartes Rule of Signs, this is a valuable tool for math classes.
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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.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: A Apr Zeroes and Factorization of Quadratic Polynomial

For Teachers 9th - 10th Standards
This is the first of a series of problems building to an understanding of an important property of polynomial functions, that a polynomial of degree d can have at most d roots. Aligns with A-APR.B.2.
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Activity
Help Algebra

Help algebra.com: Factoring Polynomials

For Students 9th - 10th
A detailed description of how to factor several types of polynomials is presented. Examples are provided to demonstrate the process.
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Activity
Texas Instruments

Texas Instruments: Factoring

For Teachers 9th - 10th Standards
A teaching activity that makes the equivalence and zeros connection between functions.
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Whiteboard
ClassFlow

Class Flow: Solutions to Quadratics

For Teachers 9th - 10th Standards
[Free Registration/Login Required] Shows students how to solve for x within a quadratic function (no factoring) and identify the root(s) of the function.
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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...
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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.
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Handout
Purple Math

Purplemath: Factoring Polynomials: How To

For Students 9th - 10th Standards
Demonstrates the steps involved in factoring a general polynomial, including using the Rational Roots Test and synthetic division. Shows how to "cheat" with a graphing calculator.

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