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Mathematics

Interactives for Students

Cracking the Ice Age
In "Continents on the Move," discover how scientists measure continental movement. Grades 6-8, 9-12.

Danger in the Jet Stream
In "Up, Up, and How Far Away?," use visual perspective to estimate the distance to an object. Grades 3-5, 6-8.

Decoding Nazi Secrets
In "A Simple Cipher," work to crack a secret message that has been encrypted using a cipher. (Shockwave plug-in required.) Grades 6-8, 9-12.

Decoding Nazi Secrets
In "Send a Coded Message," use a virtual version of the German ciphering machine, Enigma, to send an encrypted message. (Shockwave plug-in required.) Grades 6-8, 9-12.

Elegant Universe, The: Welcome to the 11th Dimension
In "Multidimensional Math," progress from one to four dimensions by starting with a point and ending with a hypercube. (Flash plug-in required; non-Flash version available.) Grades 9-12.

Hunt for Alien Worlds
In "Signs of Life," use data to locate the planet Jupiter and determine if there is a nearby planet with an atmosphere habitable for humans. Grades 6-8, 9-12.

Infinite Secrets
In "Approximating Pi," see Archimedes' geometrical approach to estimating pi. (Flash plug-in required; non-Flash version available.) Grades 6-8, 9-12.

Lost at Sea -- The Search for Longitude
In "Find Your Longitude," locate a ship on the high seas using only the Sun's position and the time of day. (Shockwave plug-in required; non-Shockwave version available.) Grades 6-8, 9-12.

Lost King of the Maya
In "Reading Maya Hieroglyphs," figure out the Maya numbering system, a base 20 system of counting. (Shockwave plug-in required.) Grades 6-8, 9-12.

Methuselah Tree
In "Build a Tree-Ring Timeline," learn about dendrochronology and analyze patterns to build a virtual tree-ring timeline. (Shockwave plug-in required.) Grades 6-8, 9-12.

Perfect Pearl, The
In "How Many Pearls?," learn about two methods to estimate how many pearls are in a treasure chest. Grades 3-5, 6-8.

Proof, The
In "Pythagorean Puzzle," manipulate a square to see how it fits into the Pythagorean Theorem. (Shockwave plug-in required; non-Shockwave version available.) Grades 6-8, 9-12.

Pyramid, The
In "Hieroglyphs: Say What?," learn about hieroglyphs and then try to decipher a message. Grades 3-5, 6-8, 9-12.

Pyramid, The
In "Scaling the Pyramids," click on a parts of a pyramid to learn more about it and print out and assemble a scaled-down version of the Great Pyramid. Grades 6-8, 9-12.

Secrets of Lost Empires I -- Pyramid
In "Scaling the Pyramids," print out and assemble a scaled-down version of the Great Pyramid. (No plug-in required.) Grades 3-5, 6-8.

Secrets of Lost Empires II -- Pharaoh's Obelisk
In "How Big Were They?," compare the weight of the largest ancient obelisk to a herd of elephants. (Shockwave plug-in required.) Grades 3-5, 6-8.

Secrets, Lies, and Atomic Spies
In "Decipher a Coded Message," see if you can figure out the cipher used to encrypt a secret message. (Shockwave plug-in required; non-Shockwave version available.) Grades 6-8, 9-12.

Shackleton's Voyage of Endurance
In "Find Your Longitude," determine your location on the high seas using only the sun's position and the time of day.

Three Men and a Balloon
In "Up, Up, and How Far Away?," use visual perspective to estimate the distance from an object. (No plug-in required.) Grades 3-5, 6-8.

Time Travel
In "Think Like Einstein," look at the same puzzle and think about the same concepts Albert Einstein thought about to arrive at his special theory of relativity. Grades 6-8, 9-12.

To The Moon
In "Lunar Puzzlers," use facts about the Earth, Moon, and Sun to answer four Moon puzzlers. (Frames required.) Grades 6-8, 9-12.

Trillion Dollar Bet
In "Play a Virtual Market," invest traditional stock in four companies or buy and sell call options with a virtual $100,000. (Shockwave plug-in required.) Grades 6-8, 9-12.

Vikings, The
In "Build a Tree-Ring Timeline," learn about dendrochronology and analyze patterns to build a virtual tree-ring timeline. (Shockwave plug-in required.) Grades 6-8, 9-12.

Teacher's Guides by Subject Mathematics
Mathematics
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