There weren't enough devices for today's practical class; how can vocational training be conducted without sacrificing safety procedures?

Today's vocational training session scheduled power tool practice, but there were only 3 devices available for 12 students. Someone suggested shortening the safety demo to let everyone get an extra round of practice. I didn't do that; instead, I divided the class into three rotating groups: observation, operation, and recording. I first conducted a unified demonstration of PPE, lockout, and…