They're eating and eating and eating and growing and growing and growing! Or as my kinders wrote in our book: "Se comió y comió y comió hasta que ¡se puso gordo!"
One of my more thoughtful kinders asked today: "But where do they go to the bathroom?" After which we discovered that all those tiny little balls were caterpillar POOP! EEEEEWWWW!
We also learned about molting and joked about wouldn't it be neat if when our clothes got too small we could take the off and grow new ones under them? =)