3/4 and Kleiber’s Law (video)
3/4 and Kleiber’s Law (via Numberphile) Neat video, especially if you like biology as well as math!
Educational
How to Compute Cubed Roots Fast
Take a look at this video of Scott Flansburg on the Discovery Channel’s “More Than Human”: In the video you see Scott Flansburg take the cubed root of 658,503 to get an answer of 87 in a matter of a second. How does he do it you ask? This trick does require some memorisation though, …
How to Guess the Number of M&Ms in a Jar
Adam Micolich has posted a video to show how using the “packing fraction” one can come up with a very accurate guess of the number of M&Ms in a jar.
How to Turn a Sphere Inside Out Video
This cool youtube video shows how to turn a sphere inside out without making a hole, tearing it, or creasing it!
How to Solve a Rubik’s Cube Videos
Dan Brown takes us inside on how to solve the Rubik’s Cube: Part 1 Part 2
The Human Calculator – Scott Flansburg
Scott Flansburg was born in New York on December 28, 1963. He served in the U.S. Air Force (1982-1988) and had a tour of duty with the Office of Special Investigations in Tokyo, Japan. He then returned to the United States and became an advocate of teaching math in an innovative fashion. In 1989 …
How to Make a Yoshimoto Cube
The following is a tutorial about how to make the Yoshimoto cube using paper (though it takes a very long time!). To make it you’ll need paper, scissors, some glue, and some adhesive tape. You can check out a non-paper version here. To make one yourself you can print out the following Yoshimoto sheet and …