This newly expanded fourth edition text offers the latest information in the field of agricultural mechanics, providing instruction on basic mechanical skills and applications, as well as career opportunities for students in high school and post-secondary programs. Topics covered range from tool identification and maintenance, small engines, electricity, and electronics, to construction and masonry. The units are presented in a logical, easy to read and follow format, allowing students to comprehend concepts and apply them to laboratory settings. Objectives and competencies to be developed are included in each section, along with a list of new terms, a materials list, student activities, and self-evaluations. This edition is vividly illustrated with the most current full color photos, charts, and diagrams, to help students reinforce their understanding of the book"s fluid movement between the principles and application of agricultural mechanics.(agriculture, agriscience, arc welding, woodworking, welding, plumbing, agricultural structures, agricultural mechanics)