Computer Science Unplugged

Don Sannella writes:

I wrote:
> there is some
> child-friendly stuff around about algorithms, for instance a card
> trick that illustrates a simple error-correcting code. (I recall
> seeing a book full of such things, and will try to track it down.)

"Computer Science Unplugged" by Tim Bell, Ian Witten, and Mike
Fellows. I found a copy on the web at

and so on, up to

or buy it at



A deeper piece of computer science unplugged is Ronald W. Doerfler's Dead Reckoning : Calculating Without Instruments. It describes a great number of efficient methods of mental calculation, all with references. Some notable authors cited are Donald Knuth, Richard P. Feynman, and Douglas Hofstadter.
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