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Narwhals are often called the "unicorns of the sea." But these fascinating creatures are members of the whale family. Read all about narwhals as you practice addition. This nonfiction math book combines math and reading skills, and uses real-life examples of problem...
A rodeo is filled with excitement and fun. Cowboys and cowgirls show their skills, and clowns entertain the crowd. Learn to count on a trip to the rodeo! This nonfiction math book combines math and reading skills, and uses real-life examples of problem solving to teach...
Swing into place value as you learn about the fascinating spider monkey! This nonfiction math book combines math and reading skills, and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems,...
The Great Barrier Reef is a special place. Come see the coral. Look at colorful sea creatures. Australia's underwater attraction is waiting for you. Along the way, you'll learn place value! This nonfiction math book combines math and reading skills, and uses real-life...
Flag football is a fun sport that anyone can play. Read about flag football as you learn subtraction. This nonfiction math book combines math and reading skills, and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed...
Visiting an aquarium is fun. There are many fish, sharks, birds, penguins, sea otters, and other creatures to see. Dive into learning subtraction as you read about the many animals at the aquarium! This nonfiction math book combines math and reading skills, and uses...
Germs. Everybody has them! Some germs help people. Some germs can harm people. Add and subtract with tens as you learn all about germs. This nonfiction math book combines math and reading skills, and uses real-life examples of problem solving to teach subject-area...
Food comes in many shapes. Have a circle for breakfast. Eat a square for lunch. Shapes have never been so tasty! Students will learn shapes with this brightly illustrated math book that combines math and reading skills, and uses real-life examples of problem solving to...
Join Lia as she attends the Rose Parade! There will be many floats and marching bands to see. She'll be able to measure the floats, musical instruments, and bleachers when it's over! This math book combines math and reading skills, and uses real-life examples of problem...
Mr. Tan loves toys. He loves circles, too! He owns Circle Town Toy Shop where all the toys are circular. Go shopping for fourths, halves, and wholes and learn to partition shapes! This math book combines math and reading skills, and uses real-life examples of problem...
You've probably heard of lions and tigers. Perhaps you've seen them at the zoo. But have you heard of the clouded leopard? This shy member of the cat family is an endangered species. Their shyness makes studying them a challenge for zookeepers and scientists. Find out...
Amphibians can be found all over the world. There are more than 7,500 kinds of amphibians living in streams, rainforests, deserts, and everywhere in between. Many of them are in danger due to a deadly fungus, but help is on the way! Created in collaboration with the...
Earthquakes can leave people and property in bad shape. At times, they can be deadly. Find out about the science of studying earthquakes and the men and women who track the movements of the ground below us. Created in collaboration with the Smithsonian Institution, this...
Many people depend on blue crabs from the Chesapeake Bay for their jobs. But overfishing and changes in the blue crabs' habitats have reduced their numbers. Learn how scientists have stepped in to study these blue beauties so that they can keep a healthy crab...
Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the...
Landsat satellites orbit the earth to get images. Learn how these images are made using heat. Then, find out how these cutting-edge satellites are helping save the planet! Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text...
Did you know that swimming pools are used to train astronauts? Athletes use swimming pools to train when they're injured, and doctors use them to help patients feel better. Learn how swimming pools and aquatic therapy help all kinds of people! Created in collaboration...
Nature is not always kind. Natural disasters like earthquakes and storms can wipe out cities. Entire cultures and their histories are at risk of being lost. When disaster strikes, some people work to save cultural items. They preserve culture for the future! Created in...
The Wright brothers wanted to build a flying machine.The path to achieve their dream was filled with many obstacles. Countless hours would be spent studying and testing their plans. But their hard work paid off, and today they are known as the "forefathers of flight."...
When it comes to mapping the Milky Way, scientists know one thing for sure. They know that there is still a lot that they do not know! Discover how they study the Milky Way, and learn about the galaxy that we call home. Created in collaboration with the Smithsonian...
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