Pershmail

Pershmail

Home
Shape of the Week
Archive
About

Shape of the Week

Piet Hein's Problems
His inventions and troubling behavior
Aug 19, 2024 • 
Michael Pershan
24
1
The Gömböc
A shape and its creator.
Jun 19, 2024 • 
Michael Pershan
20
3
Shape #13: Polycube
Mysticism and math
Mar 7, 2024 • 
Michael Pershan
8
Shape #12: Oloid
It's a wobbler
Nov 16, 2023 • 
Michael Pershan
5
3
Shape #11: Cyclogon
They're the Shape of the Week
Sep 13, 2023 • 
Michael Pershan
6
1
Shape #10: Orthodiagonal Quadrilateral
Read to the end for classroom questions.
Jul 21, 2023 • 
Michael Pershan
2
2
Shape #9: Reuleaux triangle
Shape of the Week is back.
Jul 11, 2023 • 
Michael Pershan
2
Shape #8: Prismatoid
THEY ARE SO COOL
May 19, 2023 • 
Michael Pershan
5
Shape #7: Cupola
Cupolas are the shape of the week
May 12, 2023 • 
Michael Pershan
1
Shape #6: Sphericon
I promise I'll post about teaching again soon. But not today.
Apr 28, 2023 • 
Michael Pershan
2
Shape #5: Antiprism
They're the shape of last week
Apr 24, 2023 • 
Michael Pershan
4
4
Shape #4: Double Bubble
It's the shape of the week
Apr 14, 2023 • 
Michael Pershan
4
1
© 2025 Michael Pershan
Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture