Zoo is signed by outlining the word Z-O-O. First, you outline a 'Z' in the air with your index finger. Then you make an 'O' shape with your index finger and thumb, and move the hand sideways across your body. (To do any double letter in ASL, the specific letter sign is moved across the body, as if to indicate an extension or repetition of that letter.)
Introducing the zoo concept through signing is great preparation for babies for an upcoming field trip to the zoo. You can build up a little excitement and anticipation for your child, and you will also help them get used to the idea of the zoo so they are more likely to enjoy the experience and less likely to be shy or scared. Introduce the sign while reading story books about a zoo, or watching a video about a zoo. You can also use zoo to describe a group of animal figurines. "At the zoo we can see an elephant, a giraffe, and a tiger."
Babies are huge fans of everything fauna. Taking little ones to the zoo may just be the ultimate adventure. Grab your flash card set and work on teaching your baby signs for every exotic animal you spot at the zoo.