Amazing Insects
This "buggy" site provides important information on the characteristics of bugs. This includes insect anatomy and metamorphosis. Information from this site will help to provide a basic foundation for teaching the subject.
http://www.ivyhall.district96.k12.il.us/4th/kkhp/1insects/buginfo.html

Insect Worksheets
Educational crossword puzzles and word finds can be found here!
http://www.science-teachers.com/insect_worksheets.htm

3-D Insects
Virtual reality illustrations of various insects and arachnids. This site allows the user to view insects from all angles in a 3-D environment. Great for generating an idea of what an insect looks like without a microscope.
http://everest.ento.vt.edu/~sharov/3d/3dinsect.html

It's a Buggy World
This site provides great activities, poems, stories, and numerous links for insects. It also includes directions for fingerplays and insect crafts!
http://www.teachingheart.net/teachinsects.html

BUG-GO
This insect-version of bingo allows students to identify various insects, learn interesting facts, and have fun all at the same time. The site provides print-outs of all the necessities.
http://www.uky.edu/Ag/IPM/teachers/bug-go/bug-go.htm