a piece of wax paper over the “water drops unite!” sheet.
place about 5 drops of water in each of the small circles around the outside.
as fast as you can, use your straw to drag each drop of water to the center. when all the drops are united in the center, you are done.
challenge your partner to see who can unite all their water drops the fastest.
print two “race drop raceway” sheets for each group. you and a partner can follow the directions below to race each other.
tape the race drop raceway sheet onto a piece of cardboard to give it support.
tape a piece of wax paper over the “race drop 