About Pi - From the Math Forum.
Anyway You Slice It - Online lesson plan. Don't forget Branching Out and Online Activity.
Ask Dr. Math - Geometry
Dynamic Geometry - Two-year research project.
Euclid's Elements - Geometry applets.
Geometric Eagle - ThinkQuest
Geometry - ThinkQuest
Geometry and the Imagination - Handouts
Geometry for All - ThinkQuest
Geometry - Games and Puzzles
Geometry Problem of the Week - Problems are posted each week.
Getting Into Shape - Online lesson.
Interactive Geometry - Student activities.
Interactive Manipulatives - Virtual manipulatives related to the NCTM Geometry standard for grades 9-12.
Interactive Mathematics Online - ThinkQuest
Introduction to Geometry - ThinkQuest
It's No Day at the Park - WebQuest
Pi, Anyone - Online lesson plan. Don't forget Branching Out and Online Activity.
Polyhedrominia - Online lesson.
Ptolemy's Ptools - ThinkQuest
Pythagorean Theorem - A description and 20 proofs.
Quickie Math: The Geometry Experience - ThinkQuest
Seeing Double? Triple? - Online lesson
Totally Tessellated - ThinkQuest
Triangular Packaging Dilemma - WebQuest
What's Your Favorite Proof? - WebQuest
Updated August 16, 2005