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.
Unit Plan
Khan Academy

Khan Academy: Solve Equations Using Structure

For Students 9th - 10th
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.
Handout
Math Is Fun

Math Is Fun: Derivation of Quadratic Formula

For Students 9th - 10th Standards
The learning resource investigates the quadratic formula. Students learn how the formula is derived by completing the square and solving for x.
Activity
Wyzant

Wyzant: Equation Calculator

For Students 9th - 10th
Students can input an equation and have the site solve it for them, complete with steps shown and explanations given along the way. Equations must be simple, first- or second-degree with only one variable. A quick list of rules to follow...
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
CK-12 Foundation

Ck 12: Algebra: Completing the Square

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Learn how to complete the square in order to solve quadratic equations.
Unknown Type
Khan Academy

Khan Academy: Quadratics by Taking Square Roots

For Students 9th - 10th
Solve quadratic equations of the form (x+a)^2-b=0. These can be solved using square roots. For example, solve (x-5)$2-4=0.
Activity
Texas Instruments

Texas Instruments: Getting Started With the Ti Navigator: Quadratic Equations

For Teachers 9th - 10th
This lesson introduces students to Activity Center and is intended to help students write systems of equations in standard form in slope intercept form to solve the system using tables and graphs.
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.
Activity
Purple Math

Purplemath: The Quadratic Formula Explained

For Students 9th - 10th Standards
An excellent discussion on solving quadratic formulas, accompanied by numerous examples.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Linear Quadratic Systems

For Students 9th - 10th
A lesson, practice exercise, and resource for use when planning classroom instruction on linear quadratic systems. Find definitions, example equations and graphs, a four-question quiz with solutions, and an activity through which...
Interactive
Shodor Education Foundation

Shodor Interactivate: Algebra Quiz

For Students 9th - 10th Standards
Students are able to have an on line quiz where the score and time elapsed is recorded on various level of solving equation problems.
Unit Plan
Khan Academy

Khan Academy: Quadratics by Taking Square Roots

For Students 9th - 10th
Analyze the process of solving a quadratic equation by taking the square root. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Quadratic Formula

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Learn how to use the quadratic formula.
Unknown Type
Khan Academy

Khan Academy: Equations and Inequalities Word Problems

For Students 9th - 10th Standards
Construct an equation or an inequality that models a given context. Modeling expressions can be quadratic, rational, or exponential. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video,...
Handout
Cuemath

Cuemath: Equation

For Students 9th - 10th
A comprehensive guide for learning all about equations with definitions, how to solve them, solved examples, and practice questions.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Linear Quadratic Systems

For Students 9th - 10th Standards
The mathematics tutorial explores how to solve linear and quadratic systems of equations. The lesson consists of class notes, calculator tips, examples, and practice problems with solutions. The teacher resource includes a worksheet that...
Unknown Type
Elias Saab

Math Drills: Roots of Polynomial Functions Quiz

For Students 9th - 10th Standards
An interactive quiz which provides students with a problem involving a polynomial function to be solved. Students input their solution and have the program evaluate it. Hints are available if the student needs them, and explanations are...
Unknown Type
Khan Academy

Khan Academy: Solve Equations Using Structure

For Students 9th - 10th
Solve advanced equations by strategically using quadratic factorization methods.
Unit Plan
Mangahigh

Mangahigh: Algebra: Solve Trinomials by Using the Quadratic Formula

For Students 9th - 10th Standards
Students watch an online tutorial on the concept of solving trinomials using the quadratic formula. After watching, students test their knowledge by attempting ten practice problems that increase or decrease in difficulty based on their...
Unit Plan
Cool Math

Coolmath: The Quadratic Formula

For Students 9th - 10th Standards
Reference material and practice problems using the quadratic formula.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: The Discriminant

For Students 9th - 10th
Thirty-eight problems present a variety of practice working with discriminant. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to...
Unit Plan
CK-12 Foundation

Ck 12: Trigonometry: Trigonometric Equations Using Factoring

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving trigonometric equations using factoring, square roots, and the quadratic formula.
Unit Plan
Khan Academy

Khan Academy: Completing the Square (Intermediate)

For Students 9th - 10th
Solve quadratic equations of the form x^2+bx+c by completing the square. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.