On block day we were fortunate to have an awesome visitor. His name was David Webb. He talked about our recent unit and other topics like vacuums. He also did other experiments showing how the vacuums work. Like the marshmallows getting bigger then all suddenly shrinking. Or the balloon enlarging until it can't go anymore then popping. These experiments i found very interesting. I liked the presentation and hope that he could come again to show our class a different set of experiments!
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