Learn to count like the Maya by studying one of their ancient stone documents.
Are you quick enough to hit a 90 mph fastball?
Princely models for science
Playing games is a great way to exercise your brain. Even a simple game like Tic-Tac-Toe can teach you about strategy.
Before there were clocks, people used shadows to tell time!
Download a PDF file with step-by-step instructions for doing your own cow's eye dissection.
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