Once again K2 and I did a science lesson on a property of air.
K2 took a clear, plastic shoe box, added about 3 inches of water and put it in the freezer the night before. We used this icy container to keep our pop bottles and the air inside of them chilled.
We asked the children to choose a partner and gave each team a pop bottle (don't touch! we don't want to warm the air!), a quarter and a shared cup of water.
- First dip a finger in the cup of water and wet the top of the pop bottle.
- Set the quarter on top to trap the air, being careful to keep it centered so no air can escape.
- Now carefully, you and your partner wrap your hands around the pop bottle and use your eagle eyes and ears to monitor what the quarter does.