Author Archive

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Hiding the Moon

October 7, 2014 4:00 pm

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Tomorrow morning many of us will get to see a lunar eclipse, one of the coolest solar system events you can watch. The Earth will move right between the Sun and Moon to put its own shadow right on the Moon. This will make the Moon turn a cool shade of reddish-orange as it slides into our shadow.

Monster Pumpkins

October 6, 2014 4:00 pm

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As Halloween nears, we start thinking about ghosts, monsters, and creepy creatures. We also think about more cheerful, colorful things like pumpkins, too. So what better way to celebrate than to make a monster out of pumpkins?

Dancing with a Traffic Light

October 5, 2014 4:00 pm

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When we’re in a hurry, we hate having to stop and wait for a red light, or for that sign with the little red man. People in a rush sometimes just ignore that guy and try to run across before cars drive through, which is dangerous. So some people in Lisbon, Portugal wondered if pedestrians (people on foot) would stop if the little red man moved around and made waiting 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).

The Ugly Duckling of the Bug World

October 3, 2014 4:00 pm

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Butterflies are beautiful, but most don’t start out looking quite so nice. Take the swallowtail butterfly pictured here for example. In caterpillar form it looks like bird poop so other animals won’t eat it – and that seems to work! Click “Read More” to find out more, and see how the numbers transform in this shape-shifting math.

Heavy Rain That’s Always Dry

October 2, 2014 4:00 pm

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It’s always good if they set up something cool for you to watch at an airport as you’re waiting for the airplane. One airport in Singapore has created a really cool Kinetic Rain sculpture for this reason. Click “Read More” to see it in action, and let the numbers rain down!

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 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 Is Man’s Best BFF?

September 28, 2014 4:00 pm

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What dog do people like the most? Is it the German Shepherd? The Labrador Retriever? Or maybe the Springer Spaniel? Click “Read More” to find out – and dig up the numbers on man’s best friend!

Deep Dive

September 27, 2014 4:00 pm

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On Thursday we talked about breaking world records, and somebody set an amazing one this week. Click “Read More” to find out what record was broken – and dive into the math!