Distribute a set of materials to each group.

Drops on a paper towel

Have each student:

• Use the droppers to put 4 drops of water (spread apart) on a paper towel.
• Tape a corner of the paper towel to the edge of the desk, so it hangs freely over the side.

Mist on a plastic cup

Have each student hold up an empty 12oz plastic cup. With the spray mister about 12 inches away, spray the outside of each student's cup. These drops are very tiny compared with the drops students placed on the paper towels.

Have students inspect the drops carefully with their magnifiers.

Think of these drops as very tiny puddles. Is anything changing?

Ask students to find the smallest drop they can see and stare at it for a while. The drop will become smaller and should disappear as they watch.

Have students record their observations on [What happens to drops of water?] in their Science Notebooks.