Kindergarten & 1st graders did these fabulous collages based on the book Bugs! Bugs! Bugs! by Bob Barner.  My students viewed the book through tumble books at www.tumblebooks.com.
The book looks at a variety of "bugs" and it has a great chart at the end with information about bugs. 

My students traced their feet, created a flower out of a coffee filter and collaged their bugs with construction paper and markers.