Safety is such an important issue I believe it is imperative that as a teacher I'm methodical in the way I approach safety issues.  Addressing safety with in my class room begins before the students even enter my class.  By being proactive and looking for materials and tools I would prevent accidents before they could have.  I also plan on giving my students a tour of the class on the first day pointing out where there are safety hazards and the steps it is important everyone take in order to keep everyone safe in my classroom.  Thirdly every time I begin a new project or allow a student to use a new tool I would demo that tool to them and ask them to sign a contract acknowledging that they have been trained in the proper way to use that tool.