So far we have learned- the, we, see, a, like, and to- PRACTICE these words with your kids everyday. Have them read them, write them, and look for them in the books that you are reading to them.
Also if your child still needs help with letters, use the flash cards EVERYDAY. Have them tell you the sound, the letter name and write it. They can look for the letters around the house and in the stories you read to them.