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March 1, 2000

Useful and Curious Math
GRADE LEVEL: 9-12, Advanced

The Carpenter's and Joiner's Pocket Companion, published in 1888, is the basis for the math facts and tricks published here.

The site has a very simple, no frills design without graphics.

The sidebar table of contents provides easy navigation from one trick to the next.

Did you know there are 293 ways to make change for a dollar? Or do you need some tips and tricks for learning how to quickly know whether one number will divide evenly into another number leaving no remainder? Or perhaps the sections Multiplication Tricks or Squaring Tricks will pique your interests. Curious and Useful Math offers all that and more. Other sections include Box Math, Calendar Math, and even Square Roots by Hand. According to the site's author, "Some of [the information is] Useful and some of it's Curious. Which is which, though, is up to you." This site is equally useful to the student looking for a catchy way to remember complex operations or just the curious student!