A really valuable activity we did in my class during our hygiene series was about what we can do to stay healthy. Some of it is dependent upon our diet, exercise, sleep. And some of it depends upon how well we keep our hands clean. The #1 way to avoid sickness is regular hand washing and we used Glogerm and a black light to help us see the common places that get missed (even if we use a lot of soap and water)! It was a great lesson and it was fun, engaging, and VISUAL way to teach about how important it is to wash our hands thoroughly. However, I must add a DISCLAIMER.