Calculus Made Easy
On-Line Encyclopedia of Integer Sequences
Is Pi Normal?
Introductory Statistics
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Edwin Abbott Abbott, The Flatland (1884)
Babylonian Mathematics
Puzzlehunt
Math is Not Linear
Melencolia I
Lockhart's Lament
"What do math grad students do all day?"
Reciting 100,000 Digits of Pi (I could not find videos of the record. They seem to not exist.)
Terence Tao's Very Real Blog
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