Grade 4

Danny and Josh thought that today would be just like any other school day—wake up, eat breakfast, and go to school. Of course, they didn't expect to accidentally turn into grasshoppers in the Read More →

Prairie dogs, vultures, grasshoppers, goldfinches, pocket gophers, and bison are some of the many animals that make up a grassland food web. But do you know how the many types of grasses in a Read More →

There is a saying, 'What goes up must come down.' That's the law of gravity. A famous scientist called Sir Isaac Newton was the first person to understand gravity. What do you think our world Read More →

Find out what a gray wolf has in common with a red fox or an African lion. Discover what sets a gray wolf apart from a manatee or a giant panda. Readers will compare and contrast key traits… Read More →

What's that dog with the handsome looks, graceful walk, and body the size of a pony? It's the Great Dane! Great Danes are quiet dogs with gentle personalities and hearts of gold. Their owners Read More →

Ships, bridges, and tall buildings are marvels of engineering. They are designed to be strong and safe. But even state-of-the-art designs don't always hold up in the real world. Learn about… Read More →

Without inventors, we wouldn't have cars, airplanes, or light bulbs. Inventors build devices that make our lives better. But not all inventions succeed. In fact, the history of inventions is… Read More →

Explore some of history's biggest failures in medicine—from bloodletting to early remedies—and how some of those failures eventually led to success. Read More →

Science is all about the pursuit of knowledge. But sometimes that pursuit leads scientists down the wrong path, and things can go spectacularly wrong! Learn about some of the biggest fails in Read More →

Sports are all about great strategy and overcoming obstacles, right? Not always! Sometimes failures in sports are as exciting as successes. Learn about the biggest fails—from an NFL team… Read More →

Technology is constantly changing the world we live in. But new tech doesn't always catch on right away, or even work like it's supposed to. In fact, the history of technology is filled with… Read More →

Some of the fiercest and most skilled hunters in the world, great white sharks use intellect, camouflage, and a strong sense of smell, hearing, and sight to track and kill their prey. Watch… Read More →

Great white sharks and dolphins face off in a fight. Sharks are skilled hunters, but bottlenose dolphins are one of the ocean’s smartest creatures. Discover the size, speed, attacks, and… Read More →

This story is about some bad pirates who were very greedy. They always wanted more money and more food. Some clever animals thought of a good way to teach them a lesson. What do you think the Read More →

Beginning with the story of Creation, the Bible teaches us to use and respect the land, conserve natural resources, and save energy. The Bible stories of Noah, Abraham, Joshua and others are… Read More →

Where in the world can you find the world's largest flower? Where can you ride a camel to see the oldest and deepest lake in the world? Where can you climb to the highest peak on Earth? The… Read More →

Appalled by government apathy regarding climate change, 15-year-old Swedish activist Greta Thunberg started a protest in front of the her country's parliament building in August 2018. She… Read More →