Let’s consider a clip from the documentary "Behind the Curve" about the controversy surrounding the Earth's shape. It starts at 46:54 (“These people can be very, very bright”) and ends at 51:00 (“... continue claiming that the Earth was flat.”).
Pause the clip just after the statement "one of the people in the community actually purchased one for $20,000..." and ask the class:
- Why did they need the expensive gyroscope? Why did they think it would show something different from the simple one?
- Will they find evidence that there is no rotation to the Earth? Why (not)?
- If they find evidence that the Earth is round, what will they do next?
- If they find evidence that the Earth is flat, what will they do next?
(* In some areas, this documentary is available on Netflix. In others, it’s on Amazon Prime.)