Figure 4: We circled the target area and shared symbols that align with the message to use receptively. The parents of this student were concerned about his need for more social experiences (he had orthopedic challenges and his expressions were difficult to interpret). This student was beginning to use a voice output communication aid to reinstate pleasurable activities (i.e., a big mac to say “more!”) The team used this image to justify the modeling of these core words (pictured here) to build the foundation for his eventual spontaneous use of “hi” or “hey” to greet or gain attention which would be found in his new and more robust AAC System. This image is reprinted with permission and is a representation of the printed version of the Communication Matrix (Rowland, 2004).