How Things Work

An up-down machine

> An elevator car hangs on steel cables inside a shaft. A pulley turns > the cables to make the car slide up or down. Climbing the stairs in a house is easy. But in a tall building with many…

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How Does Your Garden Grow?

A window-sill garden

You can have a bright, cheerful garden in your house all winter—a window-sill garden of house plants! You can buy small house plants at many stores. Put them on a window sill, or on a table near a…

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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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