Some links I like
Assignments 6680
Assignments 6690
Exploring xn + yn = 1
Exploring y=ax
2
Graphs in the xb Plane
Concurrency
Script Tools
Finding X and Y
Tangent Circles
Orthogonal Attributes
Pedal Triangles
Parametric Curves
Parametric Explorations
Spreadsheet Explorations
Bouncing Barney
Magic Squares
Friday the 13th
Gingerbread Man
Island Treasure
Lesson Plan
NCTM
MacTutor History of Mathematics Site -- St. Andrew's University
The Program of Mathematics Education
Math Forum
(alias Geometry Forum)
Furman University Mathematical Quotation Server
Project InterMath
Assignments 6600
Distance to Nearest Road
The Census Taker Problem
Bottles and Cans
Friday the 13th
Candy Problem
Gingerbread Man
Coloring Circles
A Tangled Tale
A Will to be Interpreted
Coins
Island Treasure
Change for a Dollar
Fractions
Nine Digit Number
Grass Consumption by Oxen
Bisectors Problem in 120
0
Obtuse Triangle
20-30-130 Triangle
Volume of Holes Left by a Tree Spade
Distance Survey Problem
Oil Tank Problem
Cutting the Cake
Maximum Area - Rectangle
