THIS DAY IN SCIENCE: Ford Model T - 1st Car On Assembly Line, Cost $825 in 1908

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This demonstration emphasizes how we can make predictions based on patterns. A jigsaw puzzle is used as an analogy for the periodic table. Just as Mendeleev left gaps in his original periodic table, gaps are left in this jigsaw puzzle and just as he hypothesized the existence and properties of new elements, students hypothesize and find the missing pieces to the jigsaw puzzle.

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