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.
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).
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.
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!
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 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!
If you’ve ever slept over at a friend’s house, you know how hard it is to sleep at these things. It’s just too much fun to be with people you don’t normally see at that time. And even though you’ll fall asleep really late, you might wake up early the next morning anyway, since you’re used to it. Click “Read More” to some sleepover bedtime math!
If you love a good contest and a chance to win a prize, you might be excited about a new one at Guinness World Records. As of this year they’ve been tracking records for 60 years, and so they’re celebrating their own birthday with a competition. Click “Read More” to find out about it – and see how much math is involved in breaking world records!