Good day to all! In case you missed anything this month, here are the complete list of posts for May 2012. 39 Gorgeous Data Visualization Software Proof of the Sum of Square Numbers Counting the Number of Squares on a Chess Board Happy Birthday, Markus Hohenwarter Microsoft Mathematics Tutorial 7 – The Ink Input Using […]

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# Monthly Archives: May 2012

## 39 Gorgeous Data Visualization Software

I learned recently from Math 2.0 about DataVisualization.CH, a site that creates as well as collects software and applications for data visualization and infographics. The software on the site are categorized into three: maps, charts, and data. Mathematics teachers should definitely check out the list. Some (or most?) of the software and apps are for free.

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## Proof of the Sum of Square Numbers

In the first part of this series, we have counted the number of squares on a chessboard, and we have discovered that it is equal to the sum of the squares of the first 8 positive integers. The numbers , , and so on are called square numbers. This method can be generalized to compute […]

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