Activity
Texas Instruments

Texas Instruments: Prodigious! Quadratics and Free Fall Motion

For Teachers 9th - 10th
Uses the movie "October Sky" as an introduction to the study of free fall motion functions. Acts a summation activity to a quadratic unit in Algebra. Solve quadratic equations by graphing, factoring, and the quadratic formula.
Activity
Discovery Education

Discovery Education: Web Math: Using the Quadratic Formula

For Students 9th - 10th Standards
This WebMath site provides interactive problem solvers to understand the quadratic formula and solve quadratic equations by factoring. In addition to providing answers, these 'solvers' show the step-by-step method in which to get there.
Unit Plan
Khan Academy

Khan Academy: Solving Quadratics by Completing the Square

For Students 9th - 10th Standards
Practice some multiple-choice problems solving quadratics by completing the square.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Comparing Methods for Solving Quadratics

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Practice choosing methods for solving quadratic problems.
Activity
Wolfram Research

Wolfram Math World: Quadratic Equation

For Students 9th - 10th Standards
This MathWorld site shows how to derive the quadratic formula.
Unit Plan
Sophia Learning

Sophia: Quadratic Formula Tutorial

For Students 9th - 10th Standards
Determine the use of the quadratic formula and when and why it is used to solve quadratic equations.
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...
Activity
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: La Ecuacion De Segundo Grado

For Students 9th - 10th
In Spanish. In this interactive activity you can learn to recognize quadratic equations, solve quadratic equations with one unknown in graphical and numerical form, and solve practical problems.
Activity
Integrated Publishing

Integrated Publishing: Irrational Roots

For Students 9th - 10th Standards
A brief lesson on when irrational roots occur when solving quadratic equations, and how to find them. Contains examples, exercises, and solutions.
Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Equations That Are Quadratic in Form

For Students 9th - 10th
Using this tutorial, you'll learn to solve quadratic equations by viewing step-by-step equations and video explanations and by completing practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Quadratic Formula and Complex Sums

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Solve quadratic equations with real coefficients that have complex solutions.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: The Quadratic Formula

For Students 9th - 10th
Twenty-five problems present a variety of problems working with various aspects of solving equations using the quadratic formula. They are given with each step to the solution cleverly revealed one at a time. You can work each step of...
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."
Unit Plan
Sophia Learning

Sophia: Solving for Quadratic Equations

For Students 9th - 10th
Solve for x using the quadratic formula and complete practice problems. Assess learning with a quiz.
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
Oswego City School District

Regents Exam Prep Center: Linear Quadratic Systems

For Students 9th - 10th Standards
Resources to use when planning instruction on linear-quadratic systems. Find lessons on solving systems algebraically and graphically, a practice quiz with solutions, and a worksheet through which students investigate and solve systems.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Identification of Quadratic Models

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson covers fitting a data set to a quadratic equation.
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."
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Identification of Quadratic Models

For Students 8th
[Free Registration/Login may be required to access all resource tools.] Understanding the equations of parabolas
Lesson Plan
Student Achievement Partners

Student Achievement Partners: Looking for and Making Use of Structure [Pdf]

For Teachers 9th - 10th
In this lesson, students solve quadratic equations and make use of the structure.
Activity
Texas Instruments

Texas Instruments: Solving Systems With Quadratic Equations: Systems of Conics

For Teachers 9th - 10th Standards
In this activity, students will plot the graphs of systems of equations and determine the number of real solutions of the system. Then find the solution of the system algebraically.
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
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...
Unit Plan
CK-12 Foundation

Ck 12: Trigonometric Equations Using the Quadratic Formula

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] Examples of solving trigonometric equations using the quadratic formula.