ATM PIN Theft and the Mathematics of Systematic Guessing

The video below describes how an infrared device on iPhones can be used to steal Personal Identification Numbers (PINs) on ATM cards and credit cards. It is important that you watch this video because it also contains instructions on how to prevent theft. What I am going to discuss post is how mathematics will be […]
Continue reading…

 

The MATHCOUNTS Math Video Challenge

I have learned recently from one of the comments in my blog that the MathCounts is conducting a math video-making competition. The name of the contest is the Math Video Challenge where students choose a problem to be solved and create a video about it. The video can be submitted MathCounts. The finalists, according to the […]
Continue reading…

 

A Short Tutorial on How to Use An Abacus

Before computers, there were abaci (plural of abacus). They were used as a calculation tool for hundreds of years. They were popular to the Greeks, Romans, Chinese, Japanese and Koreans. However, history tells us that there were way earlier versions of the modern abaci we know. According to Wikipedia, they existed in Sumeria as early […]
Continue reading…

Related Posts Plugin for WordPress, Blogger...