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The Olympic torch is lit with sunlight.

The ancient Greeks used sunlight to start fires. In honor of this, the Olympic torch is still lit with a special, parabolic, or curved, mirror that focuses sunlight into a beam hot enough to start a fire.

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We're trying to get some mobile games up and running, but unfortunately our flash games don't work on phone or tablet. How about some hilarious science jokes instead?

Arithmetic Game

Practice addition, subtraction, multiplication, and division in this tricky arithmetic game. Use the number bank to complete the equations at the bottom of the screen as fast as possible.

How to Play

Use the mouse to click on a number and add it the equation. If you made a mistake, click "reset," or click "submit" to test your answer.


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