Caterpillar Changing to a Butterfly Craft: using pom poms, pipe cleaners,and popsicle sticks, children can create a caterpillar with unfolding butterfly wings. A great tutorial that will fit right in with your Montessori zoology unit.
We would read the book The Very Hungry Caterpillar by Eric Carle. After reading the story we would each create our own caterpillar craft. Along with this craft the class would learn and discuss the life cycle of a caterpillar.