The inclusion of the child in therapeutic procedures designed to help him with his behavior difficulties has stimulated students in this field to study the nature and purpose of his participating activity. The considerable body of literature that has developed on this aspect of therapy has centered mainly on the therapeutic value of play, the child’s most natural medium of expression. Since it is essential to provide a child with the opportunity to use his natural tools and modes of expression, we see at once that play activity is an important factor in therapeutic work with children.