Sink or Swim

Today I went swimming with some friends. Someone brought a watermelon and threw it in the pool to keep it cool. Did you know a ripe watermelon will float? I didn’t. Because I am a mathnut, I wondered, “How many watermelons would fit in the pool?” When I teach volume I usually use something like candy and boxes. It might be kind of cool to create some problems with watermelons and pools.