The amazing video below came out over the summer:
My favorite memory of the video is my 5th grader seeing it for the first time and saying “dad, that mirror is terrible.” Ha!
Over the summer we printed a few of the shapes and played around with them, but ended up giving them away. Today I was reminded of the shape by this tweet from Dave Richeson:
I wasn’t sure if the print he showed in his tweet was available, so I found a different one on Thingiverse and started the print so the boys could play with the shape again tonight:
Ambiguous Cylinder Illusion by Make_Anything on Thingiverse
As luck would have it, though, Brenda Landis did put the print from Dave’s tweet on Thingiverse:
Here’s the direct link:
Brenda Landis’s “Sugihara’s Circle/Square” on Thingiverse
So, now we had two of them to play with 🙂
I had my younger son play with them first:
My older son went next:
So, a super fun project and another great example of how 3d printing can help kids see some amazing math-related ideas. Super duper thanks to Dave Richeson and Brenda Landis for sharing this print.