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For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

And why letting people come up with their own ideas, and actually try those ideas, is almost always the best approach.

The longevity of Jobs’ 10-minute design session suggests the approach worked. The calculator survived nearly two decades of ...

I created a rudimentary calculator using only marbles. Watch as I demonstrate its functionality and explore the concept.

A good budget helps you reach your spending and savings goals. Work out your proposed household budget by inputting your sources of income and projected expenses into Kiplinger's worksheet below. You ...

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