Geometry for all ages

Older posts

http://benvitale-funwithnum3ers.blogspot.com/2010/12/geometry-interactive-proofs-with.html

Eudoxus

http://www.math.tamu.edu/~dallen/masters/Greek/eudoxus.pdf

Heart Curve

http://www.mathematische-basteleien.de/heart.htm

http://mathworld.wolfram.com/HeartCurve.html

Bonne Projection

http://mathworld.wolfram.com/BonneProjection.html

Bring Geometry to Life with Google SketchUp

http://mathforum.org/sketchup/