Use books and films to teach children about which foods are healthy and which are not. Then have them sort foods into different groups. Young children may only be able to separate the healthy foods from the snack foods, but older ones should be able to separate into different food groups. You might have students go through magazines, cutting out pictures of food to glue onto a paper plate. Alternatively, draw a large face onto a piece of cardboard and cut the mouth out, then have children try to toss healthy food toys into the mouth.
Have a dentist talk to students about proper tooth care. Most likely, she'll give everyone a toothbrush and you can all practice the proper way to brush teeth. To deepen understanding of students' understanding, conduct a simple experiment by coating one egg with toothpaste and leaving another one natural. Place both eggs into a drink that might cause stains, such as a soda, coffee or tea. After 24 hours, the egg with toothpaste will still be white, while the egg without will have turned brown.
Exercise is important for maintaining a healthy weight and keeping the heart healthy. Kids who form a habit in their early years may be more likely to stick with it as they grow up. Try having kids measure their heartbeat before and after exercise to see how it changes, pointing out that the heart is getting exercise too. Exercise can also release endorphins, which make you happy. Try surprising the kids with an extra play time to see how happy they are post-play.
Germs make you sick, so kids need to learn how to keep them at bay. Demonstrate how germs get passed from person to person by covering your hands in paint, then shaking hands with one student. That student must shake hands with the next one, and so on down the line. The students will be able to see that the paint passes to everyone. Washing hands will kill germs, but it takes longer to properly wash hands than most people realize. Have kids wash their hands normally, then ask them to wash again, singing "Happy Birthday." According to KidsHealth, this song takes about 15 seconds to sing, which is how long you should wash your hands.