Credit crisis video

I thought some of you might enjoy this video about the credit crisis. It's visually very well made.


The Crisis of Credit Visualized from Jonathan Jarvis on Vimeo.


This video is also available on YouTube in two parts: Credit Crisis Part 1 and Credit Crisis Part 2.

It's square root day

Today - 3/3/09 - happens to be a square root day! It's because 3 is the square root of 9 (3 × 3 = 9). The previous square root day was 2/2/04. And then next one is 4/4/16.

An exercise for students: how many square root days are there in a century?
See Wikipedia for an answer..

Read also how the teacher Ron Gordon celebrates square root day!

Fractions to decimals calculator

This is the COOLEST fractions to decimals calculator I've seen! It will convert a fraction into a decimal to any number of decimal places, and TELL you if it is a recurring decimal, and how many digits its period is.

I tried 2/10392, and it said "2/10392=1/5196 has 2 initial digits followed by a period of 432 digits." I won't copy the actual digits here...

Hat Tip goes to MathNotations Blog.