Rules of thumb
Mon 30 Oct 2006, 07:16 PM
I am always fascinated by simple mnemonics and sayings that help us remember those things which might be hard to remember otherwise. A few I particularly like are:
- 'i' before 'e' except after 'c', or when sounding like 'a' as in 'neighbor' and 'weigh' (I hated learning it, and I still use it)
- 30 days hath September, April, June and November. All the rest have 31. But Leap Year coming once in four, February then has one day more (There are lots of variations, and this version doesn't really make sense, as it implies February has 31 days regularly, but it is the way I learned it and still think it to myself)
- 'Fork' has four letters, as does 'left', so the fork goes on the left side of the plate. 'Knife' and 'spoon' each have five letters, as does 'right', so the knife and spoon go on the right side of the plate. (Very handy, and I have no idea where I learned it, as I never hear anybody say it but me. Maybe my grandmother made it up)
- Please Excuse My Dear Aunt Sally (helps remind us about precedence order in math, Parentheses, Exponents, Multiplication, Division, Addition, Subtraction)
There is one some people use to remember the planets, but I never learned it, and don't know the order of the planets, and it probably includes Pluto anyway and is thus obsolete. Are there any of these you use or like to teach your children?
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