Was worried about the aspect of 'human error' via disappearing the small colored objects before the finish of the activity. I was happily suprised that they kept their data as error free as possible. I do recommend a few things: don't save the M&M's long, mine were kind of melted and cracked. I made the class record continue onto the back page with one spot per student. Keep organized with the counting because my activity took 2 days and I let them eat their candy at the end of day 1 which meant I couldn't do the raw data table I made with them. May do a re-do to fit it in.