chapter  9
4 Pages


Potato chips, a popular food, are easily seen and handled. Each bag has a prominent table of “Nutrition Facts” that is usually ignored irrespective of whether the purchaser is alone or in one of the groups where young people gather socially. As shown in Figure 9.1, a serving is (60 g) and fat is 22 g of that (33%). Can a youths visualize 60 g or 22 g? This is doubtful, as is their grasp of the identity of the fat, sunflower oil in this case. The fact that it is a fluid fat allows us to recover and visually present that oil. A small group approach fits exactly the popular social behavior of the teenagers, and the whole operation as a bonus has a scientific twist illustrating densities of different fluids.