Learners review reasons why teeth are necessary, define tooth decay, discuss and list ways to prevent tooth decay, name at least two foods that promote dental health, watch video Tooth Wisdom, and complete worksheet Tooth Healthy Snacks.

High schoolers make a class list of household products and discuss how many of these products are made through chemistry. They guess the ingredients in the products and imagine how toothpaste might be made. They make toothpaste.