In this delightful story Mommy has a surprise for caillou : his very own potty! Though initially uninterested, caillou eventually decides that he wants to be a "big boy" And leave his diapers behind. After several attempts, a few failures, and near misses, caillou learns to ask for the potty when he needs it and is rewarded with a sense of accomplishment and independence. Written with input from child psychologists, the hand-in-hand series of books helps children navigate their way successfully through various key developmental experiences of childhood. Toilet training is an important step in child development others are in hurry to learn have lot of time and it is essential to respect their own internal rhythm