Sphere



a solid round figure

http://www.kidsmathgamesonline.com/facts/geometry/spheres.html

http://www.kidsmathgamesonline.com/pictures/shapes/sphere.html

http://www.mathsisfun.com/geometry/sphere.html

http://www.mathsisfun.com/definitions/sphere.html

http://www.ducksters.com/kidsmath/finding_the_volume_surface_area_of_a_sphere.php

http://scienceforkids.kidipede.com/math/geometry/sphere.htm