Some other Posts
The Unknown Thing – Why we use x – A TED Talk
Show Me the Math! Was math invented or discovered?
微积分 My calculus trip to China
No Foolin’ On truncated prime numbers
My Favorite Function Everybody should have one; this is mine.
My New Calculator The Curta – one of the first handheld calculators and it doesn’t need batteries.
What is a Solution? Thoughts on making up functions to solve an equation: We do it all the time!
What’s Your Favorite? What’s your favorite equation?
Difficult Problems and Why We Like Them
Calculators A short past and future history of graphing calculators
Teaching Calculus 