How Things Work

The invisible push

The light turns green and the car starts to move quickly. It feels as if a big, invisible hand pushes you back in the car seat and makes you stay there. But it feels different when the car stops…

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Mathemagic

Zero

Zero stands for nothing. If you have zero ice cream cones, then you have none at all. It may seem very silly to have a numeral for something that isn’t there, but the numeral 0 is really very…

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December

The “tenth” month

December is the twelfth month of the year. It has thirty-one days. In ancient Roman times, when the year began in March, December was the tenth month of the year. This month got its name from decern,…

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