Four interchangable layers of endangered species in their respective habitats: air, canopy, ground, and water. The fifth layer shows already extinct creatures. Comes with a key of names to all animals pictured. 70 animals, 24 pieces.

Be an architect! Create five colorful layers of houses, all different architectural styles. 24 pieces.

Learn to count by climbing stairs! Under each puzzle piece, corresponding to the number of toys on each step, is the numeral, the name of the number and hands with raised fingers indicating "how many." 10 non-toxic colorful pieces.

A fun introduction to the systems that make us tick. Featured are the muscles, skeleton and organs. 18 pieces.

This puzzle illustrates the location of the sense organs and their function. 12 non-toxic colorful pieces.

A wonderful way to teach children about tooth structure. Illustrated are the tooth rooted in the gum, the dentin layer and finally the nerve. A favorite of dentists! 11 pieces.

A fun introduction to the systems that make us tick. Featured are the muscles, skeleton and organs. 18 pieces.

This puzzle illustrates the location of the sense organs and their function. 12 non-toxic colorful pieces.

A wonderful way to teach children about tooth structure. Illustrated are the tooth rooted in the gum, the dentin layer and finally the nerve. A favorite of dentists! 11 pieces.