I realize that not everyone drinks soda, and if you don't, you shouldn't start just because you need the can for class. (Soda is bad for you! OK, I'm done.) However, we do need about 2 cans per group for this demo to work. So if you know someone who drinks soda, ask them for their can; if you drink multiple sodas this weekend (see parenthetical note above), we'd love it if you would bring in all of your cans to share around, just in case. If you'd like, you may bring them to our classroom any time between now and then and I will store them for you.
Have a great weekend!