‘History’

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When Coins Make Sense

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!

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!

Sticky Pictures

September 3, 2014 4:00 pm

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Post-It® Notes, those colorful, sticky squares of paper, are the most fun school supplies out there. They’re used as bookmarks, name labels, reminders — and even as art. Click “Read More” to do the Post-It picture math!

A Truly Magic Carpet

August 16, 2014 4:00 pm

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A flower is beautiful on its own, but when you put it with thousands of other flowers to make a picture, they become even more beautiful. That’s exactly what over 100 people did this week in Belgium. Click “Read More” and do the sweet-smelling math!

Just ZIP It

August 13, 2014 4:00 pm

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When you mail a letter, you tell the post office where it’s going by writing the address: the street name and (building) number, the city, and the state. But big cities handling mail for lots of people have to split it into smaller batches, using ZIP codes. Some people are even important enough to have their very own zip code! Click “Read More” to do the zippy math.

Happy Birthday, New York!

July 26, 2014 4:00 pm

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On this day in 1788, New York became the 11th state in the United States. And it’s a state full of surprises everywhere you turn. Click “Read More” to do the Empire State math!

From Dawn Till Dusk

July 25, 2014 3:59 pm

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Note: As we do for religious holidays, in honor of this month we’re providing a second extra math problem about Ramadan, for those who celebrate or would like to learn more about it. Click “Read More” to do the math. Enjoy!

How Tall Is Tall?

July 16, 2014 4:00 pm

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It’s pretty easy to measure how tall you are: from the floor to the top of your head, no shoes allowed. But it’s a little more difficult to measure buildings: do you count up to the top floor? Or is it to the tippy top of the antenna? Click “Read More” to count your way to the top!

Fill Me Up

July 14, 2014 4:00 pm

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Getting gasoline for your car is pretty easy. But how does the gas get to that hose in the first place? Click “Read More” to find out and do the math behind gas!