This document contains supplemental materials for special needs high school students intended to facilitate their mainstreaming in regular welding classes. Teacher's materials precede the materials for students and include general notes for the instructor, suggestions, eight references, a class progress chart, a questionnaire on the usefulness of the supplemental materials, and an answer key to student worksheets. The student materials consist of nine color-coded instructional units on the following topics: math skills; blueprint reading: basic views; blueprint reading: welding symbols and abbreviations; joint design and structural shapes; welding terms; using welding references; general safety procedures; using machinery safely; and metallurgy. 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 explanation of a skill or task; (6) skill sheets that contain paper and pencil exercises that 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)