Designed as supplemental material to on-going instruction in the vocational program, this third of three picture dictionary booklets in the Arc Welding series is intended to assist the learning handicapped student to master the core vocabulary taught in the trade. Intended for individual or small group instruction with minimal supervision, this module contains six lessons: (1) Groove Welds, (2) Welding Symbols, (3) Basic Joints, (4) Parts of a Weld, (5) Welds, and (6) Measurement. The format for each lesson is (1) general directions, including a list of words taught in that lesson, and (2) each word presented on a separate page with a representative picture and simple definition. (The module is intended for use with a cassette tape and flash cards.) An alphabetical index to the vocabulary words in the module is given at the back of the booklet. Two other dictionaries in this series are available as CE 024 411 and CE 024 412. An accompanying teacher's manual is available separately as CE 024 410. (This is one of five series of materials developed by Project Hire. The two-volume final report of the project is available as CE 024 117 and CE 024 118. See Note for the other series.) (YLB)