Lightning calculator and "mathemagician" Art Benjamin goes through his paces in a 15 minute video.
posted by Wolfdog on Dec 19, 2007 - 32 comments

Roman Numerals and Arithmetic
posted by jack_mo on Aug 19, 2006 - 19 comments

The Incas had binary! Archaeologists have long known that khipu strings were used by the incas to store arithmetic records. Now, it's believed that they used a 7-bit binary code to store all kinds of "written" information. Well? Who's going to be the first to translate Harry Potter onto a khipu string?
posted by unreason on Jun 23, 2003 - 8 comments

Tests show U.S. children lag behind A careful reading of this page reveals that for many of America's schools, children lag behind some 16 other countries in math and in science. However: not all states contributred data. But the important thing is that a few schools and areas were right up there with the best in the world. Perhaps then we ought to study those that work instead of bashing our educational system in general.
posted by Postroad on Apr 4, 2001 - 18 comments