Author: Cindy Neuschwander

Publisher/Date: Charlesbridge Publishing, 1999

ISBN: 1-57091-164-9

Grade Levels Recommended for Use: 6-10

Brief Summary: Sir Cumference has been turned into a fire breathing dragon and its up to his son Radius to find the cure to change him back by finding the magic number that is the same for all circles.

Topics: circles, pi, irrational numbers, ratio

Suggested Activities:

Pizza project
http://archive.ncsa.uiuc.edu/Edu/RSE/RSEorange/AsliceofPi.html

Where is your birthday in Pi?
http://www.façade.com/legacy/amiinpi/

Making a pi necklace
http://students.ou.edu/M/Katharine.E.Mc-Shan-1/necklace.html

Measuring bubbles
http://students.ou.edu/M/Katharine.E.Mc-Shan-1/bubbles.html

Pi Day song
http://www.winternet.com/~mchristi/piday.html