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Paragraphs: Systems of Sentences

Blow up a paragraph into individual sentences. Now reassemble it. The clues hiding in each sentence will surprise you.

Math Curiosity: Finding Primes

Prime numbers are unpredictable! How can we possibly find them all? An Ancient Greek mathematician found one way!

Create A Civilization: The River

The Nile, the Tigris, the Euphrates, the Seine, the Thames, and now… your river!