[Lex Computer & Tech Group/LCTG] I can't send this to everyone

[Jon Dreyer]

On 5/16/22 08:53, Steve Isenberg wrote:

> Anyone else remember Chief Soh Cah Toa?

SOH CAH TOA is still taught, though (thankfully) without any suggested 
ethnicity. It's one of the few math mnemonics that I don't consider 
harmful, because it's not a mnemonic substitute for actual reasoning. 
The names of the trig functions are mere accidents of history. PEMDAS is 
another example. Compare that with the execrable FOIL, which is a 
substitute for reasoning about the distributive property, which 
frequently causes students to draw mental arrows where they don't belong.

-- 
Jon "Curses! FOIL Again" Dreyer
Math tutor/Computer Science tutor <http://www.passionatelycurious.com>
Jon Dreyer Music <http://music.jondreyer.com>
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