What Is This Thing?

Look carefully through the images in the picture handout. Your job is to make your best hypothesis as to the following questions. Record your answers in the table on the student sheet! You can check your answers with the answer key.

  • What is each machine called?
  • What does each machine do? / What problem does it solve?
  • What about the machine led you to make these conclusions?



  • What do you think is the most important inventions? Why?
    Some opinions: 1, 2, 3, 4
  • Make a timeline of important inventions (what does “important” mean?).
    Then -> compare to reality. How close were you? What surprised you?

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