I think that you must need to be some type of adrenaline junkie to be a science lab teacher in elementary school. Sure, there's the joy of introducing kids to the world of science, but equal must be the anxiety, nervousness and absolute fear of putting fire, poisonous chemicals and lots and lots of glass beakers around little kids. I guess that's where these posters would come into play. Each of these vintage science lab posters mix a bit of fear with lightheartedness into everyday science lab hazards and warnings. Posters are in worn condition with fading, some bumped edges and some stains - but they were after all used in a children's science lab class. Each poster measures 11" x 16" and is printed on heavy card stock. Posters sold individually.