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Last year, if you remember, I wrote about a great tool and example of how QR codes are being used in science education . The QR coded audio Periodic Table of Elements (as seen below) has QR codes for each of the elements in the periodic table. If you click on the image, then you can get to the high resolution full-sized version and scan some of the QR codes.
One of the things that I really like about QR codes is that they make it very easy to put useful information on your phone or tablet. Rather than trying to type a long address into your mobile browser's url bar (which can take me forever on a virtual keyboard) you can simply scan a code and open a website or file. There are a lot of tools out there for creating QR codes for webpages (including public Google Docs) but if you want to assign a QR code to a document that isn't online, that can be a little trickier unless you use Tag My Doc .
Overview: Enter some text or a URL in a spreadsheet and a QR code will be automatically created - all with the help of a little formula that you’ll learn about in this tip of the week. This is a great way to create lots of QR codes very quickly and easily!