Libby Romero

Celebrated in a film featuring Omar Sharif in his final role, meet the scientist known as the "Father of Optics," Ibn al-Haytham! During the golden age of science, knowledge, and invention in Muslim civilization - also known as the "Dark Ages" in Western Europe - this incredible scholar discovered how we see and set the stage for the methods we now know as the scientific process. Packed with beautiful and engaging photos, kids will learn all about...

What do chameleons, octopuses, and arctic foxes all have in common? They change color! Meet amazing animals that alter their appearances in this Level 2 reader. Packed with beautiful and engaging photos, this new leveled reader dives into the amazing world of animals that change their appearance based on environment, the need to blend in to hunt or stay safe, and even their mood! Kids will learn all about the how and why of these amazing animal transformations....

Conditions on Earth are becoming more and more-extreme and kids want to learn about it! Is it true that, at any given time, about 20 volcanoes are erupting somewhere on Earth? Yes! Sometimes volcanoes erupt with a big, dangerous bang. Other times they spit out lava so slowly that you could walk faster than it flows. INSIDE, YOU'LL FIND: •How volcanoes form, when they erupt, and an account of the most devastating ones in recent history; •A hands-on...

In this Level 3 reader, you can learn all about how archaeologists unearth history, from Egyptian pyramids to Incan roads, and everything in between. Travel around the world and back in time to learn about one of the coolest careers. Discover what archaeologists do, from digging through sand to traversing the jungle to diving into underwater caves. You'll explore exciting discoveries that change our perception of history and check out some of the...

Meet the seafaring adventurers, storytellers, and famous figures of Norse history in this new Leveled Reader, perfect for independent readers and kids who love learning about ancient cultures. Learn how the Vikings lived, worked, and played (...and pillaged!). Explore the rich history, culture, mythology and newest findings of the ever interesting Viking world. National Geographic Readers' expert-vetted text, along with brilliant images and a fun...

Read along with National Geographic! The events of September 11, 2001, changed the world forever. With compelling photographs and sensitive, age-appropriate text, this Level 3 reader recounts the shocking attacks at the World Trade Center, the Pentagon, and in Pennsylvania, explains who was behind the attacks, and celebrates the spirit of hope that emerged through the inspiring story of rescue and recovery and the heroes who raced to save lives. National...

Profiles the life and work of a devout Muslim who was the first to hypothesize that vision occurs when light beams travel through the lens of a human eye.

Introduces Vikings, describing their history, culture, mythology, and warfare.

"Follow different veterinarians throughout their day while they take care of sick or injured animals, from pets, farm animals, zoo animals, and ocean animals in this charming co-reader"--