Changing Sinkers and Floaters

Before the Christmas break, the 2Js were experimenting with sinkers and floaters.  Today we got to do the same, with a twist! Each student got a “sinker” (a chunk of plasticine) which sunk in the water, and had to change it so that it would float.  After discussing various ideas of how we could make this happen, students changed their plasticine balls into a stable shape that could float.  We then repeated the experiment, except this time students got a “floater” (a cork), and had to make changes to it so that it would sink.  Some students were able to complete each challenge right away, and some students had to have several attempts at it, but in the end everyone prevailed!

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