I'd like to use this as a demo tomorrow for a presentation to my nursing home residents on World Diabetes Day. I was thinking I could use it in the part where I'm talking about picking healthy choices from the vending machines. I've never done it, though, just heard of it, and Google hasn't brought me any specifics. I know I test a diet and a regular soda using the glucose meter, but it there more to it? Can anyone explain how it works or point me to a good source? Thanks!