For the last few weeks we have been busy being scientists. A few weeks ago we got a delivey of 5 caterpillars. We watched them grow and change everyday. They got bigger and bigger. We counted the days to see how long they would stay as caterpillars. After 13 days they were ready to go into their cocoons. The cocoon is also called a chrysalis. After a few days we moved them into a butterfly net ready for the next stage.