Living Math Books

LivingMath has some wonderful living math book lists, everything from early concepts to geometry to spacial ideas. From their site:

This site is dedicated to sharing resources for learning, exploring and enjoying math in a dynamic and holistic manner, for all ages.

They also have a Yahoo groups page LivingMathForum,which I plan on joining. I can't wait to delve into this site and Yahoo group and will report back!