An Interview With Rick Riordan

Between teaching and writing other books, Riordan didn't think he had time for a children's novel.

Rick Riordan's The Kane Chronicles

Rick Riordan (Percy Jackson and the Olympians) sits down with Matthew Cody to discuss his novel The Kane Chronicles. Sonia Manzano reads an excerpt.

The Challenger Explosion

Tells the story of Christa McAuliffe and the six other NASA astronauts who lost their lives in the Challenger space shuttle disaster on January 28, 1986.

Charles Darwin and the Theory of Evolution

Tells the story of how Charles Darwin developed his controversial theory of evolution based on the research he conducted during his voyage on the HMS Beagle. Written in...

How Do You Measure Liquids?

How much water does it take to fill the fishbowl? How much milk do you need for your cereal? From cups to gallons, learn how measuring tools help you fill it up.

2, 4, Skip Count Some More

There's more than one way to count! Skip counting shows you a shortcut by counting in sets of 2 or more. 2, 4, 6, 8, 10 you just got to 10 in half the time!

Give Probability a Chance!

Likely or unlikely? Possible or impossible? Probability is how likely something is. Will it be rainy or sunny for the party? Where will the spinner land? Read and find out!

How Do You Measure Weight?

How many caramels in a pound? Who caught the biggest fish? Learn how balances and scales help you with the heavy lifting of measuring weight.

The World's Tallest House of Cards and Other Number Records

How big was the worlds biggest cookie? How many dominoes were used in the longest domino wall? Crack open this book to find out!

Half You Heard of Fractions?

Want to split an apple? Half for each. That's a fraction! A fraction is a part of something. There are many other fractions, from big to small. Find out how we use fractions every...

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