Grades 2 - 5

The largest human organ is skin! Every inch of skin is made up of millions of tiny receptors that allow us to feel the world around us. Each type of receptor has a job. Some tell us the… More →

The human eye is a complex machine that allows us to see the wonders of the world! The fuel for this machine is light. Each part of the eye communicates with light to allow us to see. Young… More →

There’s much more to our ears than meets the eye! The human ear contains a chain of important links that work together to help us hear the world around us. From the ear’s tiny bones to its… More →

The sense of smell is one of the most interesting human senses! A familiar scent may trigger forgotten memories. The smell of smoke warns of danger. The smell of cooking food may cause… More →

Without the help of the nose, humans would only be able to recognize five types of tastes: sweet, sour, salty, bitter, and savory. But with our sense of smell, we are able to pass messages to More →

It was an Earth satellite that started the space race between Russia and the United States. Russia sent Sputnik 1 into space in 1957, and the U.S. responded with Explorer 1 in 1958. In this… More →

The largest space machine to ever orbit Earth is the International Space Station. It is essentially a giant science lab for astronauts. Interested young readers are invited to enter the… More →

Explorers of the fourth planet from the sun, Mars rovers collect rock and soil samples with their robotic arms. They also snap pictures of the Red Planet. Curious young readers can wander… More →

Shaped like torpedoes, Great white sharks can launch out of the water to catch prey. Named after their white bellies, these sharks easily blend in with the sun when seen from below. In… More →

Jellyfish are graceful, beautiful ocean animals. But their looks are deceiving. Those long, wavy tentacles can really sting! Jellyfish are often transparent. They do not have bones, blood, or More →

Clownfish have mastered the art of friendship. These striped fish form a special bond with sea anemones. They help each other survive. Clownfish enjoy the sea anemone's protection and… More →

Nearly as large as a school bus, humpback whales are a sight to see! Near the surface, these giants will come up to breathe from their blowholes. They migrate to find food and may hunt in… More →