"As a Parent, you can learn a lot about our child's learning and watch
for signs of possible problems.  Here are some things to look for and
discuss with  your child's teacher:

• Starting at age 3 or 4: Does your child remember nursery
  rhymes and can he play rhyming games?
• At about age 4: Does your child have difficulty getting
  information or directions from conversations or books
  that are read aloud to him?
• Kindergartners:  Is your child beginning to name and
  write the letters and numbers that he sees in signs, books,
  billboards and other places?
• At age 5: Can your child play and enjoy simple word
  games that use alliteration, in which two or more words
  start with the same sound? For Example:Name all of the
  animals you can think for that start with 'w'."

Information  provided by:
National Association for the Education of young Children
Helping Your Child Become a Reader , Andrea DeBruin-Parecki, Kathryn Perkinson, Lance Ferderer.