Provides a general overview of spiral galaxies, including descriptions of the different classes of spiral galaxy.

The site for Robert Smithson has everything you wanted to know about the Spiral Jetty and other works by Smithson.

PBS site provides various views of spiral galaxies. (Quick Time required) With this technology, you can manipulate the image to spin it around and look at it from various angles.

Information on the sculpture Spiral Jetty by Robert Smithson. Includes an image of the sculpture, a suggested art activity in text and audio, links for more information about the artist as well as a link to "Do More", a place to save or...

Based off of the hit television show NUMB3RS, this lesson gives students further insight into the various spirals that can be graphed using polar equations. While the lesson assumes that students already have some background with polar...

This article defines the basis of wind-driven circulation, including the Ekman spiral and transports.

E-book page on the final era of the Vietnam War in which the Pentagon Papers were released, protest and conflict over the war increased at home and Nixon's Vietnamization began. Questions for discussion, glossary and link to primary...

This PIZZAZ (People Interested in Zippy and ZAny Zcribbling) lesson plan will engage students in writing twist poems. Examples of ideas for these types of poems are provided. Variations of twist poems are listed as a way to provide for...

Video describes how stars move in a spiral galaxy and how their speeds can be explained by accounting for dark matter. [3:17] Includes a brief quiz and a list of additional resources to explore.

The Milky Way is the edgewise view of our home galaxy, a disk made up of billions of stars. The Sun resides on one of the spiral arms of the disk, 30,000 light-years from the thick hub of the galaxy. The actual center, with a black hole...

It is hard to imagine a way to mathematically describe a spiral. Spirals are commonly seen in nature. There are a number of different types of spirals. Some interesting examples include the spiral arrangements of scales in pine cones,...

Looks at how spirals form in nature when cells reproduce in a flower, for example. An interactive lets students try entering different values to see if they can make a spiral pattern with no gaps. The correct figure would be the Golden...

Based off of the hit television show NUMB3RS, this lesson is designed to draw a connection between polar and parametric equations, as well as to expose students to the Trawler Problem (involving a fast boat chasing a slower boat which...

This site from the University of Cambridge allows you to view information on spiral, elliptical, and Milky Way galaxies, as well as galaxy clusters. Provides basic facts about each one.

This site has general information on the structure of a hurricane. There are links to the eye, eye wall, spiral rain bands, and the Saffir-Simpson Hurricane Danger Potential Scale.

This is the official site of Robert Smithson who is an artist most known for his earthworks and recognized by his work 'Spiral Jetty.' There is a fantastic collection of his work, interviews, and much more!

An audio slideshow about artist Robert Smithson narrated by New York Times art critic Michael Kimmelman. The slideshow, which illustrates many of Smithson's drawings and works of scuplture, including his famous "Spiral Jetty," coincides...

Read a instructional activity description from each grade band (elementary, middle, high school) and adapt the content from that grade band to the other two. Choose the same language and/or culture as the sample descriptions or one your...

Students discover the mathematical constant phi, the golden ratio, through hands-on activities. They measure dimensions of "natural objects"--a star, a nautilus shell and human hand bones--and calculate ratios of the measured values,...

A lesson outline for The Fishing Game, which is located on a linked website. Teachers register a class from within the game. Students compete against two fishing companies and try to make the most profit they can over a ten-year period....

This is the full text of the novel The Gambler by Fyodor Dostoevsky. This stunning psychological portrait tells the story of Alexey Ivanovitch, a young tutor working in the household of an imperious Russian general. Alexey tries to break...

Learn how to play hop scotch in a different way on a spiral design. Book includes audio narration in 10 additional languages with text in English.

Contains an animation that will show you how the graphs of a number of polar equations are graphed. (Page may take some time to load completely.)