Planets, Stars, and Galaxies

On the moon

People have visited the moon and walked on it, so we know what the surface of the moon is like. This big ball of gray rock has broad, flat plains covered with powdery rock dust. There are rugged…

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Mountains, Valleys, and Plains

Lands of ice

Two parts of the earth are bitter cold all year round. These places are the “top” and the “bottom” of the earth—the North Pole and South Pole. The land around the South Pole is called Antarctica….

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Mathemagic

The Roads of Math

Take a line, a straight line, And divide it into three. Make the three lines form three angles, And a triangle have we. Now take this little triangle And twirl it about in space. Twirl the…

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