Signing: To sign show open your non dominant hand with fingers separated and point to the center of your palm with your dominant index. This is a directional sign. Once you have the index in the center of the palm point with the open hand in the direction that corresponds to the party you are attempting to convey the sign. Show me for example pulls the hand toward self, where show you points toward the listener.
Usage: We use the sign for show with toddlers in reference to objects or activities. You could ask baby to show you the sign for a particular word or concept.