‘Vehicles and Transportation’
The Moon looks kind of small in the night sky, doesn’t it? But it’s a pretty big place! Its circumference, or distance all the way around at the...
What’s the wackiest thing you can think of to buy? Read on to find out some pretty crazy things you can bid on, and see how they add up!
It’s amazing what you can do with paint. People who paint pictures that look really real can create a whole new kind of magic. These crazy buses are a great example of that. In the top picture, the back of a bus is painted to look like it has a battery compartment. In the second, someone painted around the wheels to make them look like two eyes. And in the third, the stretchy part of the bus looks like the bendy part of a toothbrush. Buses are a good 40-50 feet long, though, so these eyes and batteries and brushes are way, way bigger than real ones. How much bigger are they?
The Iditarod Trail Sled Dog Race is the most famous dog-sledding event, and is often called “The Last Great Race.” Just why is it called this? Read on to run through the numbers in this race, and find out what makes it so great!
You’ve heard of birds and planes flying. But what about toilets? One group decided to create a portapotty rocket and make it fly! Read on to get carried away with the numbers in this rocketing restroom.
When we hear a giant snowstorm is coming, we get really excited to play in the snow. But sometimes the storm decides to go another way and we don’t get any snow. Well, one grandpa decided to fix that problem for his granddaughter. Read on to see how he did this – and do the math in traveling snow!
Did you ever wonder what cars would say if they could talk? Chances are they’d ask a lot of questions that you’d be able to answer by doing some math. So read on to see what your car might say…and figure out how you’d answer it!
Have you ever watched an airplane in the sky, and wondered how many people are in there, and where they’re going? Now just imagine how many planes fly above you in one day! Read on to take flight with the math in the number of people flying over your head.
When we drive on the road, we can’t all just go every which way. We have to stay on one side, and wait our turn where roads cross. Stop signs help, but really busy crossings need traffic lights. The traffic light, that cute red, yellow and green trio, was patented (made official as an invention) on this day in 1923. Actually, the very first electric traffic light was invented in 1912 by Lester Wire, a policeman in Utah fed up with all the traffic; you can imagine, after hundreds of years of slow horse-drawn carriages, what it was like to have this speedy, loud thing called a car suddenly show up. So Wire borrowed the idea of railroad signals to make a traffic light, which had just red and green for stop and go. Then in 1920, Detroit cop William Potts built one with 3 colors (red, orange and green). As you see here, people have tried other designs, like this funny dial one from Australia, but the three-color light is what keeps most of us from crashing into each other today.
As beautiful as a rose is, a dozen is even more beautiful. So how about 18 million of them, put together to make all kinds of shapes of animals, buildings, people, and more? Read on to wake up and smell the roses – and do the math in the annual Rose Parade!