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.
A fun STEM Challenge for Kids! Caterpillar to Butterfly Science Activity with Balloons! See how to create your own science experiment for hours of fun with items from around the house! (easy crafts for kids science experiments)
UPDATED Infographic: Want more butterflies in your yard? Plant the nectar plants they love! Here’s a great list of butterfly-attracting annual and perennial plants — including those needed for butterfly larvae. – New Gardening Ideas