abcteach
Abcteach: Social Studies: History
[Free Registration/Login Required] A directory of history resources (games, activities, puzzles, graphics) to be used as part of elementary study of Ancient Egypt and Greece, the Middle Ages, the Revolutionary War, and other topics....
National Council of Teachers of Mathematics
Nctm: Figure This: Can You Run as Fast as a Car?
During the 100 meter dash in the 1988 Olympic Games in Seoul, Florence Griffth-Joyner was timed at 0.91 seconds for 10 meters. At that speed, could she pass a car traveling 15 miles per hour in a school zone?