**I do not allow students to remove the cups from the microwave. I'm the only one who can touch anything until I make sure everything is safe.**
I have my students fill out this recording sheet (which is on TpT) as they work to help them organize their information. It's always surprising to see that the class cup has the highest temperature initially, but has the lowest temperature after the 20 minutes. I cannot say how many times I heard, "This is so much fun" or "I love science" when we did this experiment. I think those are the times that make my job so awesome!