This publication contains the three numeracy units of the three levels of Support Materials for Agricultural Training (SMAT) in the area of occupational health and safety: Level 1 (starting), 2 (continuing), and 3 (completing). The units are designed to help the learner improve his or her numeracy skills needed to deal with occupational safety and health. SMAT materials can be used by the individual, with a mentor, or in a group or class. An introduction describes how to use the materials, types of activities, and materials needed. Each level contains agriculture-related mathematics activities. Model answers are provided. Topics covered in Level 1 are graphing and reading graphs. Topics covered in Level 2 are making comparisons and why do we need statistics? Topics covered in Level 3 are cost/risk analysis--single item and cost/risk analysis--whole farm. (YLB)