[caption id="attachment_46829" align="alignleft" width="150" caption="Google's Project Glass opens a new world of possibilities—and challenges. (AP)"][/caption]

If you think it’s hard to keep students’ attention in class now, just wait until everyone starts wearing Google’s futuristic, internet-connected glasses.

While wearing a pair, you can see directions to your destination appear literally before your eyes. You can talk to friends over video chat, take a photo, or even buy a few things online as you walk around.

These glasses can do anything you now need a smart phone or tablet computer to do—and then some.

Google gave a...

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