‘Vehicles and Transportation’

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Sunlight Flight

January 27, 2015 4:00 pm

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Have you ever driven by a building with a big black rectangle strapped to it to face the sun? That’s a solar panel, and it turns sunlight into electricity. A panel can run only a few light bulbs, but someone has built a whole airplane that can run its engines on nothing but sunlight. Read on to do the math on this amazing airplane.

The People Flying over Your Head

January 23, 2015 4:00 pm

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Have you ever watched an airplane in the sky and wondered how many people are in there, and where they’re going? Now multiply that by all the planes in the air at any time, and you get a lot of people airborne at the same time. Read on to see how one website showed all the planes flying across the Atlantic Ocean throughout the day – and see how quickly the numbers add up!

The Coldest Town on Earth

January 20, 2015 4:00 pm

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Imagine a place that is always colder than your freezer, or than the coldest day you’ve probably ever felt yourself. For whatever reason, some people like to live in places like this. The coldest town on Earth is Oymyakon, Russia, home to 500 people. Read on to find out just how cold it gets there, and do the math on these freezing temperatures!

Digging to the Center of the Earth

January 19, 2015 4:00 pm

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Has anyone actually tried to dig to China? We know our planet Earth is a ball, so if you’re on one side and just dig straight through, you’d end up on the other side, right? Well, in 1970 a drill in Kola, Russia started drilling straight down into the ground. Read on to see how far down they got and dig deep into hole math!

Roller Coaster through Your Kitchen

December 14, 2014 4:00 pm

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How would you like to run a roller coaster right through your home? It could start at any high spot, run through bedrooms and the kitchen, and pop out the front door. Someone actually built a coaster like this as a way to sell a house. Read on to see how one Dutch realtor crunched the numbers to create the most fun way to tour a house in style.

What’s Flying over Your Head

December 10, 2014 4:00 pm

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Satellites are pieces of equipment that fly high up in space around Earth. They send us our phone calls and pictures that show up on the computer; they show us where we are on the map (GPS); and they can study the stars and other stuff out in space. You’d be surprised just how many are flying miles above our heads, and how different they are from each other.

The Shape of Paddle Splash

December 8, 2014 4:00 pm

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Have you ever rowed a boat using oars? The more you paddle the same way over and over, and the more closely you match the timing of other rowers on your boat, the faster the boat goes. A photographer showed this in beautiful pictures using LED lights. Read more to do the math on this great example of math in action!

The No-Longer-Impossible Bike

December 4, 2014 4:00 pm

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A bicycle gives you a smart, easy way to go places. It weighs a lot less than a car — can you imagine carrying an SUV on your shoulder? But a bike is still pretty heavy and crazy-shaped to pick up with your hands. So a team of guys built a bike that can fold up really, really small and fit in your backpack.

Give That Building a Shove

November 29, 2014 4:00 pm

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When a building isn’t the right size for what we need, we have some choices. We can add onto it, we can knock it down and build a new one, or we can just move to another building. Or you can just move the whole building, as one company did back in 1930. You can bet that required a lot of planning and math!

Speed Stroller

November 25, 2014 4:00 pm

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You might not remember being pushed around in a stroller when you were 1 year old. But even so, you’re probably pretty sure the stroller didn’t have a gas-fueled engine driving it at the speed of a car. That didn’t stop one record-breaking dad from building the world’s fastest baby carriage.