I display these steps on an overhead for the students to refer to.
We start with a flap book that I have preassembled.
The students draw and color a caterpillar on the top of the flaps. The bottom of each flap is labeled with the stages.
A butterfly lays an egg. The students write the sentence and illustrate the stage inside each flap.
The egg hatches into a larva.
The larva makes a case around itself and becomes a pupa. Be sure to label the Chrysalis.
The case turns clear and out comes an adult.
In time, the adult female is ready to lay her eggs. And then...
It starts all over again!
I also posted a life cycle video on my classroom blog that shows the life cycle of a butterfly as well as other animals.
The Teachers Guide has tons of butterfly resources to tap into as well.