This unit of instruction on drawing and sketching in agricultural mechanics is designed especially for use with freshman vocational agriculture students. A unit plan discusses the general aims and goals, lesson titles, student and teacher activities, a list of necessary special equipment and references. The unit consists of nine lessons. A lesson plan for each lesson provides these components: need; references; objectives; interest approach; an outline of key questions, problems, and concerns with appropriate teaching techniques and information; application and followup; and transparency masters, exercises, handouts, and/or worksheets. Lesson topics are: drawing and sketching, tools and equipment used in mechanical drawing, procedures used in agricultural drawing and sketching, lettering, drawing to scale, multiview drawing, dimensioning of drawing, reading and interpreting plans, and figuring a bill of material. (YLB)