Curated OER
Properties of Earth: Word Search
In this word search worksheet, students search for words related to the Earth, the sun and it's movements. Terms include seasons, features, and movements.
Interactive Mathematics
Interactive Mathematics: The Ellipse
This excellent lesson offers a thorough definition, description, and then step-by-step analysis of ellipses. Includes a focus upon the vertical and horizontal, major and minor axes, transllations of ellipses and more.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Ellipses
Thirty problems present a variety of practice working with ellipses. 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 check each...
Texas Education Agency
Texas Gateway: Graphing Conic Sections: Ellipses
Given an equation, the student will use parameter changes to graph an ellipse and to identify the changes in the graph of an ellipse.
Paul Dawkins
Paul's Online Notes: Algebra: Ellipses
Detailed math tutorial features notes and examples that illustrate graphing ellipses using the standard form.
University of Georgia
University of Georgia: History: Lesson I: Definition and Basic Properties of Ellipse
Good site explaining the ellipse and its properties
Khan Academy
Khan Academy: Center & Radii of Ellipses From Equation
In this four-question quiz, find the center and major and minor radius of an ellipse given its equation.
Integrated Publishing
Web Algebra: The Ellipse
A lengthy example on how to formulate the equation of an ellipse.
Other
Xah Lee's Home Page: Ellipse
Good site with history, descriptions, properties, etc. of the Ellipse. This site gives the parmetric equation of an elipse and many interesting ways to find an ellipse in objects.
Khan Academy
Khan Academy: Equation of an Ellipse From Features
Given the foci of an ellipse (and some other feature), find its equation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Foci of an Ellipse From Equation
Given the equation of an ellipse, find its foci. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Wolfram Research
Wolfram Math World: The Ellipse
This site explain ellipse how they are formed with the foci, and gives a nice moving demonstration of drawing an ellipse. Read further down the page to equations of ellipses in different systems, including polar. The last half of the...
Discovery Education
Discovery Education: Web Math: Graphing Ellipses
WebMath offers a java applet that allows you to input information about an ellipse, in one of four forms, and gives you the graph of the ellipse.
Khan Academy
Khan Academy: Graph and Features of Ellipses
Find the center and radii of an ellipse from its graph, and vice versa. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Is Fun
Math Is Fun: Ellipse
Students learn about the ellipse. The tutorial consists of notes, examples, and practice problems to check for comprehension.
Khan Academy
Khan Academy: Ellipse Standard Equation and Graph
Given the graph of an ellipse, find its equation, and vice versa. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
University of St. Andrews (UK)
University of St. Andrews: Ellipse
The University of St. Andrews offers a comprehensive and detailed site explaining the ellipse.
Khan Academy
Khan Academy: Foci of an Ellipse From Radii
Given the major and minor radii of an ellipse, find its foci. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Open Reference
Math Open Reference: Ellipse
A complete reference guide to an ellipse. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Khan Academy
Khan Academy: Center and Radii of Ellipses From Equation
Find the center and major and minor radius of an ellipse given its equation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
The Write Place
Literacy Education Online: Ellipses
This resource contains information regarding how and when to use ellipses, along with examples for each of the uses mentioned.
CK-12 Foundation
Ck 12: Elem Math: Identifying Polygons and Ellipses
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to look at images and identify ellipses and different types of polygons. Includes video demonstrating a sample problem...
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.
Purple Math
Purplemath: Conics: Ellipses: Introduction
Introduces the basic terms, variables, and equations for ellipses, and discusses their physical properties.
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