Activity
Math Is Fun

Math Is Fun: Factoring Quadratics

For Students 9th - 10th Standards
The tutorial examines how to factor quadratics. The resource consists of detailed examples and explanations about the algebra concept.
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Khan Academy

Khan Academy: Features of Quadratic Functions: Strategy

For Students 9th - 10th Standards
Practice these multiple-choice problems over features of quadratic functions.
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Khan Academy

Khan Academy: Features of Quadratic Functions

For Students 9th - 10th Standards
practice these multiple-choice problems over features of quadratic functions.
Handout
Math Medics

S.o.s. Math: Quadratic Formula: Completing the Square

For Students 9th - 10th Standards
This tutorial explains the quadratic formula by reviewing its origin from the process of completing the square. Includes examples and a few exercises.
Unit Plan
Khan Academy

Khan Academy: Features of Quadratic Functions

For Students 9th - 10th Standards
Find the zeroes ("roots") of quadratic functions and the vertex of their parabolas. Functions are given in standard, vertex, and factored form. Students receive immediate feedback and have the opportunity to try questions repeatedly,...
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Khan Academy

Khan Academy: Factoring Quadratics Intro

For Students 9th - 10th
Factor quadratics of the form x^2+bx+c.
Interactive
Mangahigh

Mangahigh: Wrecks Factor: Factor Simple and Harder Quadratics

For Students 9th - 10th
In this game, you must send rescuers to ships trapped in the Bermuda Triangle by first decoding their coordinates that were given to you as quadratic expressions. As you decode the coordinates, you must draw a search area on a grid that...
Activity
Texas Instruments

Texas Instruments: Connecting Factors and Zeros

For Teachers 9th - 10th Standards
Students will determine if a quadratic formula is factorable, then they will factor the equation, set each factor equal to 0, and solve for x.
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Khan Academy

Khan Academy: Features of Quadratic Functions

For Students 9th - 10th Standards
Find the zeroes ('roots') of quadratic functions and the vertex of their parabolas. Functions are given in standard, vertex, and factored form.
Unknown Type
Khan Academy

Khan Academy: Quadratics by Factoring

For Students 9th - 10th
Solve quadratic equations of the form ax^2+bx+c=0 that can be rewritten according to their linear factors.
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: Algebra: Factorization of Quadratic Expressions

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers factoring quadratics when the leading coefficient is not one. Students can watch a video on factoring and then practice by attempting the problems...
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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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...
Unit Plan
Khan Academy

Khan Academy: Factor Polynomials: Quadratic Methods (Challenge)

For Students 9th - 10th
Factor "advanced" polynomials (i.e. polynomials of various degrees and or with two variables) using quadratic factorization methods. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
Unit Plan
Khan Academy

Khan Academy: Graph Quadratics in Factored Form

For Students 9th - 10th Standards
Graph quadratic functions that are given in factored form. For example, graph y=(x-4)(x+2). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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
Khan Academy

Khan Academy: Solve Quadratics by Factoring

For Students 9th - 10th Standards
Solve quadratic equations of the form ax^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
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."
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Khan Academy

Khan Academy: Factor Polynomials: Quadratic Methods

For Students 9th - 10th Standards
Factor polynomials that can be factored as the product of a monomial and a quadratic expression, then further factor the quadratic expression.
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Khan Academy

Khan Academy: Factor Polynomials: Quadratic Methods (Challenge)

For Students 9th - 10th Standards
Factor 'advanced' polynomials (i.e. polynomials of various degrees and or with two variables) using quadratic factorization methods.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Quadratic Inequalities

For Students 9th - 10th
Using this tutorial, you'll learn two methods of solving quadratic inequalities: using a sign graph of factors and using the test-point method. Offers step-by-step written examples, and practice problems for you to complete.
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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.
Handout
Purple Math

Purplemath: Solving Quadratic Equations by Factoring

For Students 9th - 10th
Demonstrates how to solve quadratics using factoring (that is/the Zero-Product Property). Provides worked examples/and warnings about common mistakes.