Caillou Be Careful - Step by Step Author:Joceline Sanschagrin Under Mommy?s close supervision, Caillou learns for himself the value of being careful. One winter afternoon Caillou goes outside to make a snowman without his mittens and learns that when it?s cold out, it?s good to dress warmly. Then, when he?s helping Mommy make hot chocolate, Caillou learns that a hot stove can burn, just like Mommy said.