3D technology in the classroom: All the excitement of watching Avatar without trying to understand how those floating islands worked.

The Wall Street Journal reports that 3D technology is all the rage in classrooms these days, mainly as a means to keep students entertained.

Generally, 3D projectors are used in science classrooms--you know, to show planets circling the sun or a dissected frog's organs.

It doesn't have much practical purpose in an English classroom. "Okay, kids," the English professor might say, "get your 3D glasses on. You've never read Shakespeare's The Tempest until you've read it blurry."