Lesson Plan
Curated OER

Poppy Meets Pythagoras

For Teachers 8th
Eighth graders find connections between numbers in a table; use Pythagoras' theorem in a general algebraic form; and measure accurately from a scale drawing to find a method that might enable the helicopter to land inside a rectangular...
Lesson Plan
Alabama Learning Exchange

The Composition of Seawater

For Teachers 9th - 12th Standards
Young scholars explore the concept of finding the composition of seawater.  In this finding the composition of seawater instructional activity, students make a saturated salt water solution.  Young scholars discuss why there is...
Unit Plan
Other

Algebra Class: Solving and Graphing a Quadratic Equation

For Students 9th - 10th
Math teacher provides a unit on quadratic equations in which she explains the concepts of solving and graphing quadratic equations through numerous examples and graphs. Hyperlinks are available to each step that ultimately leads to...
Unit Plan
Texas Education Agency

Texas Gateway: Solving Quadratic Equations Using Graphs

For Students 9th - 10th
Given a quadratic equation, the student will use graphical methods to solve the equation.
Unit Plan
Texas Education Agency

Texas Gateway: Solving Quadratic Equations Using Algebraic Methods

For Students 9th - 10th Standards
Given a quadratic equation, the student will solve the equation by factoring, completing the square, or by using the quadratic formula.
Unit Plan
Texas Education Agency

Texas Gateway: Solving Quadratic Equations Using Concrete Models

For Students 9th - 10th
Given a quadratic equation, the student will use tiles to factor and solve the equation.
Handout
Other

Quick Math: Quadratic Equations

For Students 9th - 10th Standards
Complete step-by-step investigation of quadratic functions, allowing the user to input the function. Each step, from solving f(x) = 0 to graphing and finding extreme points, is covered in depth, via links for each step (requires...
Unit Plan
Khan Academy

Khan Academy: Algebra: Solving Quadratic Equations by Factoring

For Students 9th - 10th
An exercise on solving a quadratic equation by applying the method of factoring by grouping. Begin by clicking on "show scratchpad."
Unit Plan
Oswego City School District

Regents Exam Prep Center: Quadratic Equations

For Students 9th - 10th
Includes lesson, practice exercise, and teacher resource on how to factor quadratic equations. You'll find examples for using the factoring and graphing methods for solving, a twelve-question quiz with hints and answers, and a suggested...
Unit Plan
Oswego City School District

Regents Exam Prep Center: Quadratic Equations, Discriminant, Quadratic Formula

For Teachers 9th - 10th Standards
A wealth of resources for teachers planning classroom instruction on quadratic equations, discriminant, and the quadratic formula: six lessons covering various ways to solve equations, complete with definitions and step-by-step solutions...
Activity
Oswego City School District

Regents Exam Prep Center: Solving Quadratic Equations With Complex Roots

For Students 9th - 10th Standards
These examples use the quadratic formula to solve quadratic equations. Learn what to do when the solution includes a complex number. Use the practice page and teacher resource page to enhance the lesson.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Graphs of Quadratic Equations

For Students 9th - 10th
Twenty-one problems present a variety of problems working with various aspects of solving and graphing quadratic equations. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the...
Handout
Paul Dawkins

Paul's Online Notes: Algebra: Quadratic Equations Part Ii

For Students 9th - 10th Standards
Detailed math tutorial features notes and examples that illustrate how to solve quadratic equations using complete the square then use that to derive the quadratic formula.
Handout
Paul Dawkins

Paul's Online Notes: Algebra: Applications of Quadratic Equations

For Students 9th - 10th
Detailed math tutorial features notes and examples that review applications involving solving a quadratic equation including distance/rate problems and work rate problems.
Handout
Paul Dawkins

Paul's Online Notes: Algebra: Quadratic Equations Part I

For Students 9th - 10th
Detailed math tutorial features notes and examples that illustrate how to solve quadratic equations by factoring and the square root property.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Solving Quadratic Equations by Finding Square Roots

For Students 9th - 10th Standards
Twenty problems present a variety of problems working with various aspects of solving quadratic equations by finding the square roots. They are given with each step to the solution cleverly revealed one at a time. You can work each step...
Activity
Math Medics

S.o.s. Math: Quadratic Equations

For Students 9th - 10th Standards
Defines root of a quadratic equation. Portrays graphically what quadratic roots look like. Tutorial includes two basic examples where roots are discovered, and links to pertinent topics elsewhere on the site and a math forum organized by...
Unit Plan
Math Planet

Math Planet: Use Graphing to Solve Quadratic Equations

For Students 9th - 10th Standards
A quadratic equation is an equation that can be written on the standard form ax^2 + bx + c = 0, where a is not = 0. One way of solving a quadratic equation is by factoring. Another way of solving a quadratic equation is to solve it...
Handout
Math Is Fun

Math Is Fun: Algebra: Graphing Quadratic Equations

For Students 9th - 10th
Explains how to graph quadratic equations and how to find the quadratic equation when given just the graph. Includes ten practice questions.
Handout
CK-12 Foundation

Ck 12: Algebra: Graphing Quadratic Equations Study Guide

For Students 9th - 10th
This comprehensive study guide highlights the main terms and formulas needed to review graphing quadratic equations. Examples are included.
Handout
Math Is Fun

Math Is Fun: Real World Examples of Quadratic Equations

For Students 9th - 10th
Provides examples of how quadratic equations can be used in real-world scenarios, and the different methods used to solve them.
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...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Use Graphs to Solve Quadratic Equations

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Determine the number of solutions to a quadratic equation and find such solutions by graphing.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Use Square Roots to Solve Quadratic Equations

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Solve quadratic equations involving perfect squares.

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