‘Daily Math’

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Too Big for the Camera

November 8, 2014 4:00 pm

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How do you take a picture of a tree that you can’t fit into the camera’s view? Read on to find out how a team of tree climbers and photographers from National Geographic did it to take a picture of a 247-foot tree called The President.

Wearing Your Heart – and Some Numbers – on Your Sleeve

November 6, 2014 4:00 pm

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It’s a big job to knit a sweater, not to mention a sweater that teaches math. But Sondra Eklund has done just that with her super-colorful, stripey prime factorization cardigan. Forget using a calculator – all she needs to do is look down at her sleeves to do the math!

3,500-Ton Bath Toy

November 5, 2014 4:00 pm

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When a big new warship is built for our Navy, it’s built on land, of course – but then it somehow has to get to the water. There are a few ways to do it, but the most fun way to launch a ship has to be tipping it off a ramp and letting it plop into the water like a bath toy. We bet the waves the ship creates are a bit bigger, though.

Picking the Winners

November 4, 2014 4:00 pm

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Today is Election Day, when grown-ups get to choose the people they want to have running our government. With the country, each state, and each city and town having its own government, there are a lot of people running for office today and hoping the numbers add up for them!

Kid in the Mail

November 3, 2014 4:00 pm

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For a long time the U.S. Post Office delivered only thin letters. So when they first started delivering packages in 1913, people got excited and started mailing all sorts of surprising things.

Cloudtrackers

October 30, 2014 3:00 pm

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When you look up at the sky, for a moment a big fluffy cloud might block the sun, and then you’re in the shade. These puffy, floating shadow-makers are great for creating shapes…and doing math.

Trick Ice Cream

October 29, 2014 4:00 pm

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Ice cream is already a pretty exciting treat: cold, yummy sweetness that melts on your tongue, sometimes with crunch or caramel mixed in. So what could be better than ice cream? Color-changing ice cream, of course, which was recently invented by Spanish physicist Manuel Linares.

Glow-in-the-Dark Trees

October 27, 2014 3:00 pm

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We all love stuff that glows in the dark: T-shirts, bracelets, blinking shoelaces. But what if trees could glow in the dark? That’s what a Danish designer and an American scientist wondered when they put the glowing stuff from sea creatures in a baby plant. The result was glowing – literally!

Will the Real Tallest Mountain Please Rise…

October 26, 2014 3:00 pm

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Mount Everest is the tallest mountain on Earth, right? Well, not quite. At 29,035 feet, Mount Everest is the highest peak above sea level (the surface of the ocean), but it isn’t the tallest mountain from top to bottom — if you count what’s underwater.

Recycling for Fido and Fluffy

October 25, 2014 3:00 pm

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Whenever you “recycle” a plastic water bottle instead of throwing it out, you’re helping our planet by letting that plastic be re-used, so we don’t have to make it from scratch again. But it gets even better than that in Istanbul, Turkey, where one company has created a way to help the environment and stray cats and dogs in the city.