On 2012-06-21, zzzzzzzzzz wrote:

one or two significant digits. Then ('73) I bought a scientific calculator.
The skill was gone within a couple of years. Now I get fouled up on the order
of magnitude....

I know exactly what you mean. I found myself forgetting exponents and
sci notation. All a part of growing old.

Lately, I've been learning basic electronics theory. Boy, talk about
dusting off some old math skills. I kinda welcome it. Keeps my
geezer brain churning. I bought Schaum's pre-calculus outline and
discovered even that was a bit much too soon for this old dustbin
brain, so found this high school algebra refresher website. Math from
and too almost any level and very well done. Brings it all back:

http://www.onlinemathlearning.com/index.html

Dusted off and am relearning how to use my HP 48GX, too. Never
thought I'd find myself doing math as a way to relax.

nb


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