A few years ago, our daughter was intrigued by houses and flood water. She wanted to design a house that allowed the floor to float upward when flood waters rose, and then allowed the floor to lower as flood waters receded. I told her K'Nex would be great buidling tools for that kind of project. And, this is what she designed:
At the bottom, you will see a page from a baby book, those water-proof type books. When she put this in the sink and filled it up with water, the floor rose with the water, and lowered when the floor receded.
Blue Ribbon Project at the St. Louis Area Regional Science Fair!
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