# Traffic Cops for Planes

Here's your nightly math! Just 5 quick minutes of number fun for kids and parents at home. Read a cool fun fact, followed by math riddles at different levels so everyone can jump in. Your kids will love you for it.

# Traffic Cops for Planes

December 26, 2017

More than 100 years ago, Orville and Wilbur Wright flew the first airplane. It was all pretty simple: they took off, they crash-landed, they tried it again. Now we have almost 100,000 flights taking off almost every day in the U.S. alone! So it’s very tricky to keep all those planes out of each other’s way. That’s why the guys in the air traffic control tower talk by radio to tell all the pilots where to fly. And thanks to the super-cool website FlightRadar24.com, you can watch all the action yourself. Each blue circle on the map is an airport, and each cute little yellow airplane shows a flight right where it is at this very moment. Don’t worry if you see 2 planes in the same space: all the planes are at different heights above the ground. Still, it’s clearly a big job to direct all that traffic!

Wee ones: If 6 planes are lining up to land in New York, and then 1 more flies in line behind them, how many are there now?

Little kids: The busiest travel day this month was supposed to be Dec. 23. If today is Dec. 26, how many days ago was that?  Bonus: If there are 10 planes on the ground, then 3 planes land, then 6 take off, and then 8 new ones land, how many planes are on the ground now?

Big kids: If a plane jumps on the screen every 2 seconds, and takes 30 little jumps to cross the map, how long can you watch it “fly” across?  Bonus: If planes land on each of 2 runways every 5 minutes, how many planes do those air traffic guys handle from 2:00 to 4:01 pm, if the first ones land at 2 on the dot?