In a world of super-sized portions, few people have awareness of what a normal portion of food is these days - least of all our children. But one elementary school in Texas is striving to teach that awareness. Using a state booklet on food portions, teachers use yo-yos and tennis balls to make comparisons when discussing serving sizes. A serving size of vegetables, for example, is one half cup - about the size of a yo-yo. And a full cup serving of green leafy veggies equals a tennis ball.

Teachers say that the children are surprised to learn that serving sizes of some foods are far smaller than what they are served at home. The hope is that the children modify their eating habits based upon this new knowledge.