Abstract: A method and system for interactive communication in sign language using computer animation. In one aspect, a user interface is provided with a first activity area and a second activity area. A three-dimensional avatar configured to communicate using sign language is displayed between the first activity area and the second activity area. In response to the user selection of a respective one of the activity areas, the avatar is directed to sign an expression associated with the selected activity area. In another aspect, a method of teaching mathematics using sign language is provided. According to another aspect, a method of animating a signed communication is provided. In another aspect, a method of creating an animation of a sign language expression is provided.