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Compound Machine

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Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
  • Real World Application
    Too Good to Be True

    Too Good to Be True

    by CK-12 //basic

    Learn about the quest to design a perpetual motion machine, one man's claim to have invented it, and how the hoax violates ethics in science.

  • Real World Application
    Pedal Power

    Pedal Power

    by CK-12 //basic

    Find out why the bicycle is the most efficient transportation machine ever invented.

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