A special instructional intervention program to develop cognitive skills in hearing impaired adolescent students is analyzed and described, based on a special pilot project at the Model Secondary School for the Deaf (MSSD) at Gallaudet College. The program, Instrumental Enrichment, uses special pencil and paper exercises to focus on specific strategies related to problem solving, such as projection of virtual relationships, orientation in space, comparison and contrast, analytic perception, and others. A theoretical overview of the instructional program is presented, followed with examples of specific student activities. Adaptations of the program for the special needs of the hearing impaired learner are also presented; evaluation data based on systematic observation are discussed in relation to positive outcomes in the thinking style of the experimental pilot group of students. Results are said to indicate important improvement in problem solving strategies across subject matter areas. (Author)