Transdisciplinary Themes

"One of the few picture-book biographies celebrating the work of an engineer, this volume tells the little-known story of a man who left his mark upon the world." --Booklist (STARRED REVIEW) The city of Paris wanted to tear down the Eiffel Tower! Gustave...

Welcome to South Africa! Hear the sounds of 11 official languages. See lions and elephants on safari. Try new sports like cricket and rugby. Learn about the people, places, and traditions of this diverse African country.

Welcome to South Africa! Hear the sounds of 11 official languages. See lions and elephants on safari. Try new sports like cricket and rugby. Learn about the people, places, and traditions of this diverse African country.

Explore the history and development of the television and find out how a television works. Learn about the inventors who helped influence the invention of the television.

Explore the history and development of the telephone and find out how a telephone works. Learn about the inventors who helped influence the invention of the telephone.

What is it like to live in or visit Saudi Arabia? What makes Saudi Arabia's culture unique? Explore the geography, traditions, and daily lives of Saudi Arabian people.

From the cars people drive to the phones in their pockets, computers are found everywhere in our world, and they're becoming smarter. But what makes a computer program intelligent? How can some programs beat humans at chess or trivia games? Can computers...

Spend a day and night in the rain forest! Learn about this lush habitat through the diverse animals that call it home. Start the morning suspended high in the canopy with a colorful toucan. Curl around a branch and bask in afternoon sun with an emerald...

The world's tropical rain forests are being destroyed. But you can help! Navigate through three different stories in this rain forest rescue mission. With dozens of possible story outcomes, it is up to you to save the rain forests before they disappear...

Does life exist somewhere other than Earth? How many planets are outside our galaxy? What happens when stars crash into each other? For a long time, people believed Earth was the only planet in the galaxy. Now we know the universe is much bigger. Budding...

While the other Vikings love to holler and howl and battle and brawl, Leif prefers spending time by himself atop the beautiful fjord. But when it's time for the Viking Games, everyone must participate. Will Leif let down his clan . . . or surprise them?...

Come along and investigate the continent of Australia. What are its landforms? What are its major cities? What natural resources are found there?

Come along and investigate the continent of Asia. What are its biggest cities? Where is its tallest mountain? What natural resources are found there?

Come along and investigate the continent of Africa. What are its biggest cities? Where is its tallest mountain? What languages do people speak there?

Sounds can be loud. Sounds can be soft. We use our ears to hear all kinds of sounds. But how is sound made? Let's investigate to find out about sound!

You push your friend while they swing. You pull open a door. What happens when you push or pull an object? Let's investigate pushing and pulling forces!

Scientists put things into groups so they are easier to study. Materials have different properties. What are they, and how they are grouped? Let's investigate materials!

Here's to the heroes who keep our world clean. From roadkill collectors to landfill gas operators, these workers get dirty to keep us healthy and safe. Readers will explore some of the most disgusting waste-related jobs, down to the dirty details...

Get up and dance! Get to know popping and locking and other basic steps, and how this freestyle dance form has evolved since the 1970s. Discover performances and dancers who added their signature style to the hip-hop movement, from DJ Kool Herc to...

Weather includes all the conditions in the air around us. Snow, rain, sleet, and hail are all forms of weather. So is the temperature of the air and the amount of moisture in it. Learn all about weather, including how and why it changes from place to...