PERSONAL STORIES OF DISCOVERING MATHEMATICS

The diagonals of an N-by-N square reveal the sum 1+2+3+…+(N-1)+N+(N-1)+…+3+2+1.
From which cells is it possible to start a journey of vertical and horizontal steps that visits each and every cell exactly once?
A five-row table of two columns that reads the same row-by-row as it does by column.
The vectors <a,b> and <-b,a> are orthogonal.

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Bringing joyful, genuine, meaningful, uplifting learning to the world is my thing … especially with mathematics. Global Math Project, Beagle Learning & more!

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James Tanton

James Tanton

Bringing joyful, genuine, meaningful, uplifting learning to the world is my thing … especially with mathematics. Global Math Project, Beagle Learning & more!

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