Your students may already understand that food is what gives us the ability to do work, move our bodies, etc. In other words, we need food to survive. However, students may not realize that we cannot take in an endless amount of energy. We only need enough energy to keep our bodies functioning. The energy we take in must be proportional to the amount of energy we expend. If we eat too little, we will not be able to get through the day. If we eat too much, our bodies store the energy and we may become overweight.
In this lesson, the students will learn about energy and how we benefit from it. They will also learn how to reach energy balance. The important part is to stress physical activity as a means of balancing the energy we take in with the amount that we need to get through the day.