Signs, Signs, EVERYWHERE!
In many preschool or early childhood classes you walk into the room and you see the written words for different objects around the room everywhere. A chair has the word CHAIR on it, the cupboards are marked with the words PUZZLES, GAMES, PAINT etc... to indicate their contents, all in an effort to teach the children the written words for the different objects from their environment that they interact with everyday.
To teach signs, do the same thing! You can leave the written words in place and just add the printed signs from Signing Savvy along side them. You will be amazed at how quickly the students start knowing and using the signs of the objects they interact with daily.