Some links I like.
The Department of Mathematics Education
MacTutor History of Mathematics Site -- St. Andrew's University
Math Forum (alias Geometry Forum)
y = asin(bx+c)
|
Exploring
|
Further exploration of
|
Centers of a Triangle
|
GSP Script Tools
|
Three points & equal segments
|
Tangent Circles
|
Altitudes & Orthocenters
|
Pedal Triangles
|
Parametric Curves
|
Polar Equations
|
EXCEL Spreadsheet & Graph |