Help high school students discover how quickly invisible contamination can spread through a kitchen. This complete, editable lesson bundle uses a realistic raw-chicken and salad scenario to teach microbial transfer, direct and indirect cross-contamination, fomites, proper handwashing, and the difference between cleaning and sanitizing. Students trace simulated contamination across hands, utensils, cutting boards, refrigerator handles, phones, and other common touchpoints, then use the evidence to redesign an unsafe food-preparation sequence.

Designed for a 60-minute high school food science, culinary arts, or Family and Consumer Sciences lesson, the bundle includes nine editable Word documents: lesson objectives, engagement starter, complete lesson plan, lesson notes, student worksheet, critical-thinking questions, assessment, exit ticket, and teacher guide. Answer keys and suggested responses are included. A coordinated PowerPoint presentation is also provided for classroom instruction.

The investigation can use fluorescent lotion or powder with a UV light, or a low-cost alternative such as washable paint or cinnamon mixed with lotion. All contamination is simulated, making the activity practical, engaging, and classroom-safe.