‘History’

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How Many People Have There Ever Been?

October 17, 2014 4:00 pm

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There are about 320 million Americans – right now, at least. But how many have we ever had? This isn’t the easiest number to figure out. In 2011 one group did just that, though. And the numbers may shock you!

Paint Like a Caveman

October 13, 2014 4:00 pm

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Back when human beings lived in caves, life wasn’t anything like it is now. Cavemen woke up, hunted animals all day, went to sleep, and the next day they started all over, probably without taking a bath. They definitely didn’t have our cool tools, toys and gadgets. But they did make art!

Calculating Like Columbus

October 12, 2014 4:00 pm

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It’s Columbus Day, when America celebrates Christopher Columbus’ famous 1492 trip across the Atlantic Ocean and discovery of America. Actually, he was looking for what they called the East Indies back then. And he didn’t exactly do the math right, luckily for us!

Color Explosion

October 8, 2014 4:00 pm

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We’re loving this map of Crayola crayon colors, showing how Crayola has added more and more shades over the years. Back when the company started in 1903 as Binney & Smith, there were just 8 crayon shades. Since then, the number of colors has grown a lot, making coloring more fun!

A Trillion Dollars in Your Pocket

October 4, 2014 4:00 pm

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Of all the things you can buy, buying trillions of dollars that can’t be spent on anything might be the weirdest. But sure enough, on Amazon and other sites you can buy old money from Zimbabwe, a trillion dollars at a time. Every country has its own unit of money, called currency (dollars in the US, pounds in Great Britain, and so on).

When Bread Was Against the Law

October 1, 2014 4:00 pm

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It’s hard to believe, but at one point sliced bread was actually against the law in the United States. Click “Read More” to find out how long that lasted – and do the banned bread math!

When Money Weighs You Down

September 29, 2014 4:00 pm

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When we count out money to pay for something, usually we don’t study it very carefully – we just add it up. But money has some cool secrets. Click “Read More” to find out about them, and do the money math!

Avast, Ye Landlubbers!

September 19, 2014 4:00 pm

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Ahoy, mateys! It’s Talk Like a Pirate Day, when we act like them yonder criminals who’re lookin’ fer treasure. So grab ye landlubber mates, click “Read More,” and plunder the pirate numbers!

Who Has the Greater Crater?

September 5, 2014 4:00 pm

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When we look up at our beautiful Moon, we see craters, those big circular dents caused by huge chunks of flying rock smashing into the Moon for billions of years. Well, Earth has craters from meteors and asteroids, too. Click “Read More” to see which celestial body has the greater crater – and do the math!

Troubled Bridge over Water

September 4, 2014 4:00 pm

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It isn’t every day that a major city gets a new bridge, but that’s what’s happening in the New York City area these days. Click “Read More” to find out what bridge is getting a new version of itself – and do the bridge math!