Materials cover different types of insects and spiders.  For kindergarten to 2nd grade.

Books
Big Bugs! by Keith Faulkner  
Bug Book by Pamela Hickman
Bug for Lunch by Margery Flacklam 
Bugs! by David T. Greenberg                                                                                                                      
Bugs! Bugs! Bugs! by Bob Barner
Bug Safari by Bob Barner   
Daddy Is A Doodlebug by Bruce Degen    
How Caterpillars Turn into Butterflies by Jill Bailey  
Insect Metamorphosis: From Egg to Adult by Ron and Nancy Goor  
In the Tall Tall Grass by Denise Fleming       
Play and Find Out About Bugs by Janice Van Cleave 
The Very Hungry Caterpillar by Eric Carle

Realia
Bee puppet
Butterfly puppet
Caterpillar puppet
Ladybug puppet
Cockroach puppet
Firefly puppet
Grasshopper puppet
Backyard Bugs Giant Floor puzzle (48 pieces)
Insects and Spiders complete thematic unit
Plastic Insects (6 Pieces)
Caterpillar to Butterfly Cards
Insects Poster

Magazines
Insects (Kids Discover)
Insects & Spiders (Faces)
Insects (Zoobooks)

Audio
Songs About Insects, Bugs and Squiggly Things by Jane Murphy

Video
The Magic School Bus Spins a Web
The Magic School Bus in a Beehive
Reading Rainbow: Bugs