Is hand washing important? You wash your hands to get dirt and bacteria off. When your hands don't look dirty, it's easy to forget about the bacteria you can't see that can make you sick. This experiment will help you visualize how many bacteria can be on your hands, and why hand washing is so important.
How cool is this? Get a list of materials and step-by-step instructions for making homemade glycerin soap with kids. What a fun way to encourage hand washing (and sneak a little science lesson in at the same time)! || Gift of Curiosity
Glitter germs lesson. This ties in w/ the health curriculum, but I'd use it at the start of year to stress the importance of handwashing. Glitter mixed with hand sanitizer. Teacher uses it, pretends to cough, and then shakes hands with 1 student. The students then shake eachothers hands and see how the glitter "germs" spread. Discuss proper hand washing after