An interactive multi-media lesson on real numbers, by Hippocampus
http://tinyurl.com/5zrjfy

You can view all of the interactive algebra, calculus and statistics lessons by Hippocampus at
http://www.hippocampus.org/

Here are some great resources from Pam Burke for celebrating Pi Day

Let Them Eat Pi! (handout)
http://pamburke74.webs.com/Pi%20Day/LetThemEatPi.pdf

Are You Smarter Than a 5th Grader?
Version 1: http://pamburke74.webs.com/Pi%20Day/PIDayAreYouSmarter1.ppt
Version 2: http://pamburke74.webs.com/Pi%20Day/PIDayAreYouSmarter2.ppt

Pi Jeopardy Game
http://pamburke74.webs.com/Pi%20Day/PIDayJeopardy.ppt
Instructions for playing the game
http://pamburke74.webs.com/Pi%20Day/JeopardyInstructions.pdf