Floating and Sinking in Room 18

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We had lots of fun In Room 18 exploring how forces act on different objects. To begin, we guessed if each item would float or sink. Then, we placed the items into the water and recorded our results on a large group chart. As an added activity, we put an empty carton into the water and watched it float like a boat. We predicted how many “passengers” (marbles) it would take before it sank. We took turns at placing the marbles into the boat one at a time to see if any of our predictions were correct. Everyone was surprised that the boat held 44 passengers! 

We used the following words in our discussion: float, sink, heavy, light, heaviest, lightest, predict, guess, how many, count.