Mrs. Mah-Doucette made an air canon but didn't tell the students (or me!) what it was. The students were asked to guess. She played Hangman to help them figure it out. With only two blanks left, I still had no idea. Mrs. Mah-Doucette demonstrated how it worked with a student and then had me close my eyes and tried it on me. It was very cool. We discussed how much air is in the large tub but is forced out a small hole on the bottom and that's why you get that puff of air that blows a cup off our heads.
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