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… the leading online resource for improving math learning, teaching, and communication since 1992.
The Problems of the Week Program
Maths.org: Mathematical terms and ideas
The ABACUS International Math Challenge was launched in 1997 by Tivadar Diveki, head of Grace Church School’s science department. The program is based on a printed journal for gifted students, originating in Hungary over 100 years ago.
Participants over the years included Edward Teller, Leo Szilard and other notables in physics, computer science and mathematics. Today’s Abacus is designed for students of all abilities and demonstrates that mathematical talent can be stimulated and developed through individual attention, instant feedback and challenging subject matter with flexible levels of difficulty.
The Internet has made this program available to students around the world. Every month, eight problems are posted for each of three age groups. Students are asked not only to solve the problems but also to present the reasoning in their solutions. If a student submits an incorrect solution or is simply having trouble with a problem, a teacher will offer hints as to how to go about solving the problem, giving students multiple chances to succeed.
KÖMAL: The journal KöMaL
Basic of the geometry, Regular polyhedrons, Connections between regular polyhedrons, Icosahedrons and golden section, Conic sections, Dandelin-spheres, The principia of Cavalieri, Other interesting polyhedrons
In mathematics the Mandelbrot set, named after Benoît Mandelbrot, is a set of points in the complex plane, the boundary of which forms a fractal …
Wikipedia: Mandelbrot set
Skytopia: Mandelbrot set
A nice math teacher web page. It is designed for ages 13-100!
Geometry Information and Art
CoolMath: Cool Math
Cool Math 4 Kids: Cool Math 4 Kids
A nice flash animation produced by Robert Ahrens and Julia Schmalz on USA TODAY.
Wikipedia: International Space Station
Scienceclarified: International Space Station
USAToday: Space station to get final solar panels
History of NAVSTAR GPS
The GPS System was created and realized by the American Department of Defense (DOD) and was originally based on and run with 24 satellites (21 satellites being required and 3 satellites as replacement).
Galileo Navigation System
EU strives for more stable navigation system similar to the U.S. GPS
The Global Positioning System (GPS) is a global navigation satellite system (GNSS) developed by the United States Department of Defense and managed by the United States Air Force 50th Space Wing.
General information about our Sun: diameter, mass, temperature and other interesting data.
Boston.com: The Sun
Michielb: The Virtual Sun
Windows to the Universe: The Sun
BBC Home: The Sun
NASA Goddard Space Flight Center: The Sun – Introduction
Stanford Solar Center: About the Sun
KidsAstronomy: The Sun
The National Maritime Museum: What is the Sun?
Science Nationalgeographic: Solar System
Kids Astronomy: Solar System
Nineplanets: Solar System
The Voyager program is a series of U.S. unmanned space missions that consists of a pair of unmanned scientific probes, Voyager 1 and Voyager 2.
Wikipedia: Voyager program
Professor Martyn Poliakoff answers a series of questions from students at a US middle school.
Daily Telegraph: YouTube periodic table: Explosive video guides
Philosophy is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, mind, and language …