Attached are three documents. The first is a lab safety contract that outlines 15 essential rules for safety in the science lab. The second is a worksheet of 15 scenarios and two additional open-ended questions for students to demonstrate understanding of their lab safety contract. Finally, an answer key is provided for the worksheet. The entire activity takes roughly 30 minutes at the most. The safety lab and worksheet are aimed toward a high school science class, particularly Anatomy and Physiology.
I used a Power-Point Presentation to accompany my class going through the lab safety contract. Then the students had time to complete the worksheet in class (or at home if needed). If I ever had an incident occur in the lab I had both the safety contract signed, as well as, the worksheet completed and scored. Both always served to reinforce that the student did not behave properly according to their knowledge of our safety rules.