Video: Putting on a duvet cover

You wouldn't think there would be much room for advancement in the area of putting covers on duvets but here is a video showing the "burrito method" which seems to involve a lot less effort than how I've always done this before.

This strikes me as the sort of thing we should have leaned in math class while studying topology.

Lego Math Building

An excellent micro-scale Lego model of the Math Building at the University of Waterloo.

via The Brothers Brick

998,001

According to kottke.org if you divide 1 by 998,001 you get:

0.000001002003004005006007008009010011012013014015016017018019020021022023024025...

The three digit numbers in the decimal continue until 999 though they skip 998.

Japanese Multiplication

Kottke.org has a post with a video demonstrating the way that Japanese people do multiplication.  I'm not quite sure how it works but it seems easier than the method taught in western schools.

Video: The Joy of Stats

The Hans Rosling video The Joy of Stats is now online.  It is a bit long, almost an hour, but is a good intro to what Rosling has been saying about how statistics can be used to help people.  He also makes the point that increasingly powerful computers make bigger and bigger volumes of data usable by humans.

A while ago I blogged about a TED talk that Rosling did using animated graphics to show changes in statistics from the third world.  Still worth a look if you don't have time for the Joy of Stats.

Strangely Shaped Coins and Wheels that aren't Round

When I lived in the UK I used to sometimes wonder about the strange shape of the 50 pence coin.  It seemed to be half way between round and hexagonal (actually it has 7 sides).  According to this blog post the shape of the coin means that it has constant width even though it isn't round.  The post shows how this works and even demos using them as wheels.