Wonderopolis

Can You Count on the Census?

Today’s Wonder of the Day makes sense to us, because we know how to count!

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Can You Count on the Census?
Why Do We Round Numbers?

You can count on today’s Wonder of the Day to help you make some accurate guesses!

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Why Do We Round Numbers?
How Do Water Towers Work?

Today’s Wonder of the Day is really tall and full of water. What could it be?

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How Do Water Towers Work?
Do You Ever Tease Your Brain?

Join us in Wonderopolis today for a Wonder of the Day that’s a real treat for your brain!

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Do You Ever Tease Your Brain?
Why Can’t We Feel Earth Spin?

We hope you’ll take today’s Wonder of the Day for a spin!

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Why Can’t We Feel Earth Spin?
How Does the Binary System Work?

We need help deciphering today's Wonder of the Day—it's all ones and zeroes!

#1869

How Does the Binary System Work?
What Is Braille?

Join us in Wonderopolis today to learn how it’s possible for people all around the world to read and write without the benefit of sight!

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What Is Braille?
What Is the Birthday Paradox?

Today in Wonderopolis we’ll be blowing out some birthday candles!

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What Is the Birthday Paradox?
What’s the Difference Between an Architect and an Engineer?

We believe today’s Wonder of the Day will really build you up!

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What’s the Difference Between an Architect and an Engineer?
Does Practice Always Make Perfect?

We think today’s Wonder of the Day is just about perfect!

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Does Practice Always Make Perfect?
What Makes a Toy Top Spin?

It’ll be hard to top today’s Wonder of the Day!

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What Makes a Toy Top Spin?
Can a Star Point the Way?

If you’re lost, you might just wish on today’s Wonder of the Day to guide you home!

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Can a Star Point the Way?
Are Debit Cards and Credit Cards the Same?

A great new Wonder of the Day is in the cards today if you play your hand right!

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Are Debit Cards and Credit Cards the Same?
Why Do Some Years Leap Ahead?

Today’s Wonder of the Day only comes around once every four years. Don’t miss it!

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Why Do Some Years Leap Ahead?
How Many Cells Are in the Human Body?

Today’s Wonder of the Day takes a look at the trillions of things that make you who you are!

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How Many Cells Are in the Human Body?
How Fast Can a Bullet Travel?

Don’t blink or you’ll surely miss today’s Wonder of the Day!

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How Fast Can a Bullet Travel?
Why Do I Need To Learn Algebra?

Today’s Wonder of the Day might have you WONDERing what x is!

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Why Do I Need To Learn Algebra?
Can the World Be a Classroom?

Today’s Wonder of the Day is the first step of a fantastic journey!

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Can the World Be a Classroom?
How Much Water Is In a Watermelon?

What’s green on the outside, pink on the inside, and full of water? Find out today in Wonderopolis!

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How Much Water Is In a Watermelon?
Does Temperature Affect the Bounce of a Ball?

Get ready to turn up the heat in today’s Wonder of the Day!

#1241

Does Temperature Affect the Bounce of a Ball?

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