Center of the Circle
http://www.abgoodwin.com/mandala/ccweb.shtml this place has a lot of good links

Design and Mandala
http://www.pbs.org/wgbh/nova/teachers/activities/3006_tibet_01.html

Everyone’s Mandala Coloring Book (free coloring sample)
http://www.mandali.com/

Mandala (printable)
http://www.mariposamuseum.org/downloads/mandala_sample.gif

The Mandala Project
http://www.mandalaproject.org/What/Index.html

Mandala Coloring Book (printable)
http://www.junemoon.com/free.html

Mandala Zone
http://www.mandalazone.com

Meaning Mandala Activity
http://www.annieappleseedproject.org/meaningmandala.html