Some fast food restaurants have nutrition calculators that let you build a meal and see the fat grams go up as you add more food. Although I shy away from corporate web sites normally (and am in no way endorsing a restaurant or commenting about the value of fast food), I think the math is interesting:
– A “running total” is a good concept for kids who are learning about addition. They learn that you can add more than two numbers, and that you don’t have to start over with a new problem each time.
– Kids will use their chart reading skills to process the information.
– Many incorporate “Percent of Daily Values” which gives you a chance to talk about percentages.
– The exercise is a good application of math to nutrition.