When should I start teaching my baby numbers and letters? So far we're doing nursery rhymes.

Anytime! Singing the ABC song to your baby is a great way to introduce the alphabet. Babies are like sponges and they absorb knowledge very quickly. When your baby is 12 months old, you can show the basics of rote counting. For example, you can lay out 3 bibs and show your baby each bib whilst counting. http://www.babycenter.com/404_how-and-when-should-i-teach-my-child-her-numbers_6899.bc