If you're trying to convince your child to skip candy and soda, try this little science lesson. Take a tooth that a child has lost and place it in a glass jar. Pour in soda to cover and let stand for several days. After observing the tooth slowly rot, your child might think twice about sugary snacks. The point is not to scare your child, rather it is to encourage your child to make better choices about what goes in his body, and emphasize the importance of keeping his body clean and healthy.