This document contains supplemental materials for special needs high school students intended to facilitate their mainstreaming in regular air conditioning and refrigeration courses. Teacher's materials precede the materials for students and include general notes for the instructor, additional suggestions, two references, a questionnaire on the usefulness of the supplemental materials, a class progress chart, and an answer key to student worksheets. The student materials consist of 11 color-coded instructional units on the following topics: safety; current, voltage, and resistance; relays and contactors; electric motors; electrical components; diagnosing compressor problems; troubleshooting mechanical problems in domestic refrigeration system (two units); air conditiong systems; charging units; and commercial refrigeration units--preventive maintenance. The units are self-paced and contain simplified line drawings, controlled text, vocabulary development, and math practice exercises. The units typically include the following materials: (1) an introduction; (2) the objective of the unit; (3) the objectives on which students will be assessed; (4) terms and pictures of equipment used in the unit and on the job; (5) verbal and illustrated step-by-step explanations of a skill or task; (6) skill sheets that contain paper and pencil exercises to develop and reinforce math skills; (7) activity sheets designed to increase student involvement and provide extra skill practice; (8) unit reviews involving identification, matching, multiple-choice, and short-answer exercises; and (9) checklists on which to evaluate student performance. (CML)