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What Is Quantum Physics?

Today’s Wonder of the Day takes a look at the strange things that happen deep inside atoms!

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What Is Quantum Physics?

What Is Kelvin?

We think the DEGREE of greatness in this Wonder of the Day will amaze you!

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What Is Kelvin?

Which Bat Is Best?

Step up to the plate with us as we investigate baseball bats and celebrate the World Series Wonderopolis-style!

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Which Bat Is Best?

Who Was Dr. Albert Einstein?

Just how great is today’s Wonder of the Day? That’s RELATIVE—you tell us!

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Who Was Dr. Albert Einstein?

Who Was Galileo Galilei?

Just wait until you see the SCOPE of today’s Wonder of the Day!

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Who Was Galileo Galilei?

What Are the Different Degrees of Burns?

Watch out! Today’s Wonder of the Day may be too hot to handle.

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What Are the Different Degrees of Burns?

Do All Doctors Have Stethoscopes?

Join us in Wonderopolis today for a look at doctors that don’t work in hospitals!

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Do All Doctors Have Stethoscopes?

How Do Words Get Added To the Dictionary?

What’s the word in Wonderopolis? Meet some of the dictionary newbies and find out how they won their way into Webster.

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How Do Words Get Added To the Dictionary?

What Foods Bring Luck in the New Year?

Happy New Year! Let’s head to the kitchen to see what’s cooking today in Wonderopolis!

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What Foods Bring Luck in the New Year?

Who Was Marie Curie?

Today’s Wonder of the Day celebrates a chemistry wiz!

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Who Was Marie Curie?

Why Is Pluto No Longer a Planet?

Poor Pluto! Put on your space suit and join us as we examine the sad tale of this once proud and now demoted dwarf planet.

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Why Is Pluto No Longer a Planet?

Who Invented Chocolate Chips?

Bring your appetite — we’re chomping into a wonder that’s a chip off the old block.

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Who Invented Chocolate Chips?

What Do You Call More Than One Moose?

One goose said to another, “We’re geese.” A moose overheard this and became very confused. Find out more today in Wonderopolis!

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What Do You Call More Than One Moose?

Did Einstein Discover the Secret to Happiness?

Join us in Wonderopolis today as we search for the secret to happiness!

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Did Einstein Discover the Secret to Happiness?

Are Frogs and Toads the Same?

Leap on over to Wonderopolis today and hang out at our pad. If you don’t, you’ll be green with envy. And we’ll say, “We toad you so!”

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Are Frogs and Toads the Same?

Do You Sleep at a Slumber Party?

Better get a good night’s sleep! Today’s Wonder of the Day might keep you awake all night!

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Do You Sleep at a Slumber Party?

How Did April Fools' Day Begin?

Today’s Wonder of the Day has been canceled because someone accidentally unplugged the Internet. We’re just kidding!

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How Did April Fools' Day Begin?

How Big Is the Biggest Whale?

Dive in to learn about the world's largest mammal.

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How Big Is the Biggest Whale?

Why Is Sand Scratchy?

Grab your pail and shovel, and join us as Wonderopolis heads to the beach to learn more about the sand between our toes.

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Why Is Sand Scratchy?

How Do Fish Breathe Underwater?

Today we’re diving in to explore the watery world of fish.

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How Do Fish Breathe Underwater?

Explore the World of Wonders

What Is Quantum Physics?

What Is Kelvin?

Which Bat Is Best?

Who Was Dr. Albert Einstein?

Who Was Galileo Galilei?

What Are the Different Degrees of Burns?

Do All Doctors Have Stethoscopes?

How Do Words Get Added To the Dictionary?

What Foods Bring Luck in the New Year?

Who Was Marie Curie?

Why Is Pluto No Longer a Planet?

Who Invented Chocolate Chips?

What Do You Call More Than One Moose?

Did Einstein Discover the Secret to Happiness?

Are Frogs and Toads the Same?

Do You Sleep at a Slumber Party?

How Did April Fools' Day Begin?

How Big Is the Biggest Whale?

Why Is Sand Scratchy?

How Do Fish Breathe Underwater?

SCIENCE 1252 Wonders

MATH 51 Wonders

SOCIAL STUDIES 643 Wonders

LANGUAGE ARTS 162 Wonders

TECHNOLOGY 292 Wonders

ARTS & CULTURE 565 Wonders

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