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Screenshot of Calculating π by hand: the Chudnovsky algorithm
Calculating π by hand: the Chudnovsky algorithm
Screenshot of Calculator Number Trick: rectangle patterns
Calculator Number Trick: rectangle patterns
Screenshot of Calendar Challenge Puzzle
Calendar Challenge Puzzle
Screenshot of Can the Same Net Fold into Two Shapes?
Can the Same Net Fold into Two Shapes?
Screenshot of Can we calculate 100 digits of π by hand? The William Shanks method.
Can we calculate 100 digits of π by hand? The William Shanks method.
Screenshot of Can You Count From One to Eight?
Can You Count From One to Eight?
Screenshot of Can you fold a regular octagon?
Can you fold a regular octagon?
Screenshot of Can you make a hole in a thing bigger than the thing?
Can you make a hole in a thing bigger than the thing?
Screenshot of Can you solve “Einstein’s Riddle”? - Dan Van der Vieren
Can you solve “Einstein’s Riddle”? - Dan Van der Vieren
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