Shodor Education Foundation
Shodor Interactivate: Clock Arithmetic
Students will explore modular arithmetic in this activity. The student will set a starting value and them move the "clock" forward a number of specified hours to see the resulting sum. Included are disucssion resources, additional...
Texas Instruments
Texas Instruments: Texas Instruments: Numb3 Rs: When Does 1 + 1 Not Equal 2?
Based off of the hit television show NUMB3RS, this lesson will get students thinking outside the box about situations in which 1 + 1 is not necessarily equal to 2. Examples includes dozens of eggs and distances which are perpendicular.
Nobel Media AB
The Nobel Prize: Chen Ning Yang Biographical
Official Nobel biography of Chen Ning Yang. Emphases on where and when, and on his scientific publications. Little description of his actual scientific work here.
University of St. Andrews (UK)
University of St. Andrews: Wilhelm Magnus
This site, provided by the University of St. Andrews in Scotland, gives a biography of Wilhelm Magnus. Many interesting links are provided as well.
Other
Science Gems: Mathematics
This site has many links to math topics including pre calculus and calculus
Cut the Knot
Cut the Knot!: Interactive Mathematics: Geometry Articles, Theorems, Problems
Contains over five hundred Geometry articles, problems, puzzles, and games. Some sites relating to circles are provided within this list.