Which is the biggest machine of them all? A Real Engineering video claims that the biggest machine in the world is the US electrical grid and its components. It describes the first electrical plant made by Edison as well as various other energy sources for electricity, such as nuclear plants and dams. 

Concepts

machines, electricity, grid systems, technology resources

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Instructional Ideas

• Challenge learners to guess the biggest machine before watching the video

Classroom Considerations

• Scholars should have an understanding of direct current and alternating current
  
• Some familiarity with electricity is helpful, such as an understanding of P = IV = (I^2)R

• This video is hosted on YouTube

Pros

• Includes a color-coded map of US energy plants
  
• Explanations are clear and concise—easy for students to understand!

Cons

• None