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The Japanese and their invading forces have wreaked havoc across eastern Asia. They’ve even attacked the U.S. Naval Base Pearl Harbor. You’re part ...

Get moving! By opening this book, you'll be using force to make the cover move. You use forces every day. But how? Learn more about this science ba...

What makes things move, but cannot be seen? It pushes and pulls but remains invisible. Learn about the magic of magnetism! Then try a hands-on expe...

The ocean ecosystem is huge, covering most of our planet. Countless animals and plants live there. So what difference could the loss of one animal ...

The best tool to get you where you're going is a map. Learn how maps can help you find your way.

We can see light. We know it makes plants grow. Light pours from the sun and from glowing light bulbs. But we can't touch it, or hold it. What is l...

Some animals live in water. Some animals live on land. The land that animals live on can be very different. What makes a place the right home for a...

Get moving! By opening this book, you'll be using force to make the cover move. You use forces every day. But how? Learn more about this science ba...

The Japanese and their invading forces have wreaked havoc across eastern Asia. They’ve even attacked the U.S. Naval Base Pearl Harbor. You’re part ...

Adolf Hitler’s Nazi forces have violently conquered lands across Europe. They have created brutal camps where Jews, prisoners of war, and other per...

Grassland ecosystems can be found on nearly every continent. Countless animals and plants live in them. So what difference could the loss of one an...

Adolf Hitler’s Nazi forces have violently conquered lands across Europe. They have created brutal camps where Jews, prisoners of war, and other per...

Most people think of World War II battles raging in Europe and the Pacific. One lesser known, but very important, front was along the coasts of Nor...

Can you imagine how your life might change if you lived in another time or in another community? What if you didn’t have running water or electrici...

Adolf Hitler didn’t just invade Europe during World War II. He also broke a pact with Russia and invaded that country. Battles continued into the b...

Most people think of World War II battles raging in Europe and the Pacific. One lesser known, but very important, front was along the coasts of Nor...

The tundra ecosystem is vast, covering a large part of the far north. Countless animals and plants live there. So what difference could the loss of...

The tundra ecosystem is vast, covering a large part of the far north. Countless animals and plants live there. So what difference could the loss of...

Does a rainbow always need to have the same colors? Find out in what if the rainbow included different colors?

Deciduous forest ecosystems can be found on nearly every continent. Countless animals and plants live in them. So what difference could the loss of...

A temperate deciduous forest teems with life. From a tall oak tree to a turkey vulture, the living things in this books are linked together in a fo...

A tropical rain forest teems with life. From a cacao tree to a king vulture, the living things in this book are linked together in a food chain. Ea...

The Great Barrier Reef teems with life. From algae to a grey reef shark, the animals in this book are linked together in a food chain. Each one of...

Animals are more than just wild—they can be weird and wacky too. Which monkey uses a smelly rear end to stay safe from predators? And what tiny cre...