We brought in some plastic bottles. Teacher put some holes on one side of the bottle and then we put a straw in the top of the bottle and some marla. We called this our submarine. We pushed our submarine under the water and it filled up with water and it sank. To float our submarine, we got people to blow into the straw and push the water out of the submarine. Renee, Catherine, Dionne and Matthew all blew air into the submarine. Then our submarine floated.
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