[caption id="attachment_93572" align="alignleft" width="150" caption="Because creating and sharing QR codes takes little time and no money, experimenting with this technology is low-risk and sends positive messages about your ed-tech prowess."][/caption]

Quick Response (QR) codes—those black-and-white squares that look like a cross between supermarket bar codes and postage stamps—have real potential for school communications.

Created by a Japanese corporation in 1994, QR codes act like print-based hyperlinks to websites and social media networks. The codes are gaining traction because they allow on-the-go consumers to access websites more quickly from their mobile phones.

Found in newspapers, magazines,...

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