This curriculum guide provides materials for teachers to use in developing a 1- or 2-year course in agricultural mechanics for at-risk and special education students. It is one of 28 semester courses in agricultural science and technology for Texas high schools. The program prepares low-achieving students with employability skills that are transferable among agricultural mechanics-related occupations or into other vocational programs. The course guide is organized in four sections. The first section lists essential elements common to all agricultural science and technology/agricultural business courses. The second section lists the essential elements for agribusiness. The third section lists the units and topics of instruction and suggested time allocations for each unit and topic. Listed also are the catalog numbers of corresponding curriculum materials available from the Instructional Materials Service of Texas A&M University. Topics covered in the course include the following: safe work practices in agricultural mechanics-related occupations, fasteners and building materials, planning and constructing buildings and equipment, selecting and applying paint and preservatives, maintenance and use of electrical wires and motors, concrete and masonry construction, electric arc and oxyfuel welding and soldering, small engine operation and repair, maintenance of agricultural trucks and machinery, planning and conducting leadership activities related to agricultural mechanics-related occupations, and planning and conducting supervised agricultural experience programs. The final section of the guide provides topic goals and objectives targeted for the completion of the topic. (KC)