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Teach your students about basic cryptography and code making.

Which country has a great balance between their summer and winter Olympic medals?

A mysterious image. Reveal it slowly. Let your students wonder!

So who was the strangest of these eight presidents?

Some of these animals are nocturnal and some are diurnal.

Learn how to play the abstract, paper-and-pencil game Sprouts.

Five curiosity-provoking links to get your students wondering.