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    Balance scale play: Random or reflective? (practice)

    Two four-year-old boys are working with a balance and a collection of gourds. Tyler explains, “We’re trying to get this to go this way, and this one’s too heavy.” Emerson quickly invents a solution. He adds a second gourd to the lighter end, making the combined weight heavier. Tyler is…

    Subjects: simple machine

    Ages: fours

    Tags: science balance math closed captions children-object