Other
Monarch Watch
This is an excellent resource for information about the monarch butterfly that includes information about life cycle, migration, observation, conservation, classroom activities, butterfly gardening, butterfly rearing, and the like.
PBS
Pbs Critter Guide: Butterfly
Can you name the four parts of the life cycle of the butterfly? This site features a brief but detailed description of the life cycle of a butterfly and some other fun facts about this interesting insect.
Science Museum of Minnesota
Science Museum of Minnesota: Metamorphosis
A very simple, interactive, and informative explanation of things students can do to learn more about butterflies. Elementary appropriate.
Science Museum of Minnesota
Science Museum of Minnesota: Butterfly Collection
Site full of beautiful butterfly photographs including the emerging of a butterfly. One link also provides detailed information on the life cycle of a butterfly as well as a quiz to complete when finished.