NASA
Nasa: Kepler and His Laws
This site from NASA provides biographical details about the lives of Tycho Brahe and Johannes Kepler. Discusses Kepler's successes at developing laws of planeatry motion. States the three laws and discusses each one individually....
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...
Wolfram Research
Wolfram Science World: Life of Sir Isaac Newton
This site from ScienceWorld provides an interesting biographical sketch of the English physicist and mathematician, Isaac Newton. The biography is a good size in length and very informative, with links provided throughout for additional...
Texas Instruments
Texas Instruments: Ellipse: Envelope of Lines (Cabri Jr.)
Create an ellipse using an envelope of lines with Cabri Jr.
Texas Instruments
Texas Instruments: Ellipse: Locus of Points (Cabri Jr.)
Ellipse as a locus of points using Cabri Jr.
Texas Instruments
Texas Instruments: Numb3 Rs: Getting in Focus
In an episode of "Numb3rs" called "Harvest," Charlie figures out that an ambulance did not travel in a straight line. Knowing the starting point and the ending point (the foci), Charlie finds the ellipse that shows all the possible...
Texas Instruments
Texas Instruments: Conic Sections
These questions ask students to write the equations of conic sections given a variety of information. Students are also asked to find the foci of an ellipse and the asymptotes of a hyperbola. Solutions and explanations are included.
Texas Instruments
Texas Instruments: Conic Equations
This Learn Check file is a review of writing conic sections given the graph of a conic section. Students are asked to use the graphs to write the equations for a ellipse, circle, parabola, and hyperbola.
Texas Instruments
Texas Instruments: Conics as a Locus of Points
Students investigate the definition of a parabola through one of its geometric definitions. They study conic sections. They examine an ellipse as a locus of points such that the sum of distances from the foci to the traced path is constant.
Texas Instruments
Texas Instruments: Numb3 Rs: Waxing Elliptical
Based off of the hit television show NUMB3RS, this lesson introduces students to the ellipse, especially it's foci. Students create an ellipse on wax paper by repeatedly folding a circle to meet a chosen internal point. When finished,...
University of Michigan
Virtual Conics
You may have to download first, but the two VRML icons near the bottom of the page allow you to observe the plane intersecting the cone to form the conic. Controls are present to change the angle of the plane and your view of the...
Science Education Resource Center at Carleton College
Serc: Conics and Reflection
Students investigate the reflective properties of the parabola, the ellipse, and the hyperbola. They will look at applications that relate to both the collection of incoming signals and signals that are emitted from a source and...
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Conicas
In Spanish. Learn more about the ellipse, hyperbola and the parabola with these interactive activities.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Las Conicas
In Spanish. Learn how to distinguish and draw each of the conic sections with these activities.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Las Conicas
In Spanish. Learn about each of the conic sections with these interactive activities.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Construccion Geometrica De Las Curvas Conicas
Learn to construct conic curves with these interactive activities.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Conicas
Learn about the different conic sessions and try the different interactive exercises.
TED Talks
Ted: Ted Ed: The Elliptical Pool Table: A Mathematician's Dream
Learn what an elliptical pool table can teach us about mathematics. [3:40]
Math Open Reference
Math Open Reference: Ellipses
Complete reference source for information on ellipses. Provides definitions and interactive activities that will enhance further explanation.
Other
Sierra College: Conics
Provides the locus of points, dominant axis and equation, discriminant, center, vertex, focus, directrix, and asymptotes for the parabola, the ellipse, and the hyperbola.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Conicas: Esferas De Dandelin
Conics are planar curves obtained by intersecting a cone with a plane. In this unit you will be able to visually interactively the different conic sections.
McGraw Hill
Glencoe Mathematics: Online Study Tool: Self Check Quiz on Ellipses
The online assessment exhibits knowledge of advanced mathematical concepts in Trigonometry. The questions evaluate students on the topic of ellipses.
University of Saskatchewan (Canada)
University of Saskatchewan: Circles and Other Conics
Gives brief description and standard equations for the four conic sections. Includes pictures, examples, and practice problems.
CK-12 Foundation
Ck 12: Elem Math: Identifying Ellipses and Polygons
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on identifying ellipses and polygons.