CK-12 Foundation
Ck 12: Algebra: Quadratic Functions and Their Graphs
[Free Registration/Login may be required to access all resource tools.] Graph and compare graphs of quadratic functions in the coordinate plane.
Annenberg Foundation
Annenberg Learner: Insights Into Algebra 1. Workshop 4
Determine the height of a bouncing ball by creating a quadratic function for each.
Other
Ellipse
This site provides wonderful information on the ellipse. The information is a little in-depth, links are provided for additional information. Includes pictures, charts, descriptions and properties.
Merriam-Webster
Merriam Webster: Dictionary Illustration: Parabola
A labeled illustration of a parabola.
Khan Academy
Khan Academy: Graph Quadratics in All Forms
Graph quadratic functions given in any form. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
National Council of Teachers of Mathematics
The Math Forum: An Introduction to Parabolas
"Dr. Math" wonderfully discusses the basics of parabolas. He identifies where in our lives we would see parabolas as well as mentioning some of the terminology associated with them. A link is provided for information on conic sections.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Parabola Equation
Dr. Math, in a reply to a student's question, describes how to obtain the equation of a parabola.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Graphing Parabolas
Dr. Math helps a student with the plotting and with finding the vertex and line of symmetry of a parabola.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Parabola
Dr. Math, in a reply to a student's question, explains how to find the location of the vertex and focus, calculate the distance between the focus and vertex, as well as identify the axis of symmetry and the directix.
National Council of Teachers of Mathematics
The Math Forum: Exploring Parabolas
A lesson plan using the computers to help students understand the various forms of equations of parabola. The site requires students to use the computer and offers a possible assessment of the lesson plan.
Analyze Math
Analyze Math: Vertex and Intercepts Parabola Problems
The tutorial explores the vertex and intercepts of parabolas. Some topics discussed are vertex form, vertical axis, intercepts, and graphing. The activity consists of examples with detailed solutions.
Other
Center for Technology and Teacher Education: Parabola Lesson Plan
This site is a lesson plan on construction of a parabola using the definition. Geometer's Sketch Pad software is beneficial for the lesson. Through the lesson students develop gemetric constructions of parabolas, use the distance formula...
Purple Math
Purplemath: Completing the Square: Finding the Vertex
Demonstrates step-by-step how to complete the square to find the vertex of a parabola. Thorough descriptions of each problem.
Purple Math
Purplemath: Conics: An Overview
Introduces the basics of conics in algebra, including a flow-chart for determining which sort of conic is represented by a given equation.
Cool Math
Coolmath: Intro to Graphing Parabolas
Learn how to graph parabolas with this quick tutorial.
Cool Math
Coolmath: Graphing Parabolas Part 2
Find out how to graph parabolas in this second tutorial.
Cool Math
Coolmath: Graphing Parabolas Part 4
Find out how the equations shift the shape of the parabola.
Cool Math
Coolmath: Graphing by Completing the Square How
Explore and understand graphing by completing the square.
Cool Math
Coolmath: Graphing by Completing the Square Intro
This algebra lesson introduces how to complete the square in a parabola.
Cool Math
Coolmath: Graphing by Completing the Square Freaky Things That Can Happen
This algebra lesson shows how to deal with different types of things that can happen when you are completing the square.
Cool Math
Coolmath: Advanced Graphing Sideways Parabolas
This algebra lesson explains how to graph sideways parabolas.
Interactive Mathematics
Interactive Mathematics: Find Equation of a Quadratic Function From Its Graph
A detailed explanation of how to find a quadratic equation from its graph using different methods, including using software.