National Institutes of Health
Nih Curriculum Supplement Series: The Science of Energy Balance
A great resource for teachers to help explain the balance between calorie intake and physical activity. There are many student activities that reinforce the need for physical activity in a healthy life style. Included are a teacher's...
Mayo Clinic
Mayo Clinic: Calorie Calculator
Use this interactive calorie calculator to determine what your optimal daily caloric intake is according to your activity level and body type.