4th Grade

Leap back into history and see the first skateboards in action. Investigate the how and the why behind the modern skateboard's design. Then, watch science in action as we break down the ins and outs of popular...

Time has fascinated humans for thousands of years. We have struggled to find ways to keep track of time and predict patterns in nature. Ancient people watched the skies to study nature's cycles and mark them in time...

If you were traveling to outer space, what would you wear? Luckily, some of the best scientists have figured that out for astronauts. NASA scientists and engineers have designed the best gear to help astronauts travel...

The unique properties of glass make it the perfect material for science. It has been used in laboratories for centuries. Glass containers like test tubes and Petri dishes help scientists do important research...

Being a great surfer requires more than skill and instinct. It's a sport that relies on science! Without buoyancy, surfers would sink. Without acceleration, they could not travel the length of a wave. Science also...

Have you ever wondered how something flies? Wilbur and Orville Wright had the same question more than 100 years ago. Today, the Wright brothers are known as the forefathers of flight. Learn about the obstacles and...

Humans are dependent on electricity. Every day, we flip switches, tap screens, and reap the benefits of this technology. But how did it all start? Thomas Edison created an electric light bulb that changed how...

Modern meteorologists put science to work to predict what the future holds. These predictions tell people how to dress for the day, or whether to pack an umbrella. But that's not all they do! They also track hurricanes,...

Did you know astronauts train in water before going to space? They're not the only ones who use swimming pools for training. Athletes train in water when they are hurt. Doctors use water treatments to help people feel...

Journey to Africa to explore the world of the grasslands! Readers are taken on an adventure through the grasslands to learn about the various animal and plant life and grassland conservation in this...

There is so much to explore in the Amazon! Readers are taken on an adventure through the Amazon rainforest to learn about the lush plants and beautiful animals, deforestation, and rainforest conservation in...

Take a bat, a ball, a mitt, and a warm summer day. Put them all together and you've got the great game of baseball! From the basic rules of baseball to All-Star Games, the first World Series, and the Hall of...