At 37 to 42 months old, your child will probably bombard you with never-ending questions—and, yes, "Why is the sky blue?" will be one of them. How will you respond when you don't know the answer? Actually, this can be a good time to do a little research together. Support her curiosity and interest, while bonding along the way.

• Amerian Academy of Pediatrics. Caring for Your Baby and Young Child, Birth to Age 5 (5th Ed.)
• American Academy of Pediatrics (Oct 2006) The Wonder Years: Helping Your Baby and Young Child Successfully Negotiate the Mahor Developmental Milestones