John Willis

Did you know that pemmican was part of many Native American diets? It is made from a mixture of dried meat, animal fat, and erries or nuts. Learn more in Food, a title in the Cultures of America series.

The Rock Cycle series takes readers on a journey through the cycles that affect the ground beneath their feet. Each title examines different concepts relating to the rock cycle, how they work, what their role is, and how they affect people. Detailed charts, vivid images, and features such as timelines and maps expand on the material in each title.

Oceans cover more than 70 percent of Earth's surface. They are the reason why Earth is known as "the blue planet." Learn more in Oceans, part of the Aquatic Ecosystems series.

Cobras are known for the hoods on their heads. They use their hoods to scare away threats. Find out more in Cobras, one of the titles in The World of Snakes

Did you know that an armadillo's body is covered in hard plates? A hare's body is covered in soft fur for warmth. Young readers will discover the differences between these animal opposites and more in “Animals”, a Science Opposites book.

Did you know that tinikling is one type of Filipino dance? In this dance, two dancers hop between two bamboo poles. Learn more in Dance, a title in the Cultures of America series.

The Rock Cycle series takes readers on a journey through the cycles that affect the ground beneath their feet. Each title examines different concepts relating to the rock cycle, how they work, what their role is, and how they affect people. Detailed charts, vivid images, and features such as timelines and maps expand on the material in each title.

Did you know that papel picado is a kind of traditional Mexican artwork? It is made by cutting a pattern into a stack of papers. Learn more in Arts and Crafts, a title in the Cultures of America series.

Lakes are bodies of water that are completely surrounded by land. They form in areas known as basins. Learn more in Lakes, part of the Aquatic Ecosystems series.

Coral reefs are home to a massive variety of plant and animal life. They are built from rocklike skeletons made by creatures called coral polyps. Learn more in Coral Reefs, part of the Aquatic Ecosystems series.