Sporcle

If you're looking to kill some time or maybe even learn a little something, check out Sporcle. And let this be your warning. This website is addictive. This is a site of "mentally stimulating diversions," and even though a few of these diversions have very little educational value, there are many quizzes with some legitimate classroom connection.

The site works extremely simply. First, you just choose a subject or search for a topic and click on one of the preset games in that subject regarding some category like Human Bones or Countries of Europe. Then you're put on the clock to answer/name/type/correctly spell as many of the items as possible in the allotted time. If you're interested in keeping track of how you've done throughout your exploits with Sporcle's numerous quizzes, feel free to register. It's free, of course. You can even just create your own quiz if you can't find a quiz to satisfy your needs. Also, there's even a Sporcle app to keep you iPhoners occupied on the go.

How it works in the classroom?

Some of the quizzes are just too good not to show students. When the time runs out or when you click "Give Up," Sporcle will even display a percentage of items you typed, which would provide you, the teacher, with instant feedback of how much of the material the student remembers or at least how much they can type and spell correctly within a time constraint.

Also understand that there are plenty of quizzes on Sporcle that are pretty uneducational (Looney Tunes Characters and Super Mario Bros Enemies are still fun though), and your students will absolutely find them, but even then, they still have to demonstrate some degree of typing and spelling skill to correctly input their responses. Nevertheless, I still think there is plenty of useful material on Sporcle to help your students learn and remember some very relevant, important stuff. Check it out.