Question

Joop is testing whether microwaved water or stove-heated water cools off more quickly. This is his list of materials, so far:

•water.
•microwave.
•cups.
•thermometers.
•stove.
•pan.
How would you help Joop to improve his materials section?
Have him tell what size pan to use

Have him tell what size of cups to use

Have him tell what kind of cups to use -- plastic? glass? Styrofoam?

All of the above