Grade 3

Cryobiology is the science of cold. By studying animals in freezing temperatures, scientists learn how to use cold to make surgeries safer and preserve living organs. Cryobiology helps treat Read More →

Drones are helpful robots that can be flown with radio control. Ranging from the size of a quarter to a sixty-foot wingspan, drones have proven useful in lots of unique ways. Discover the… Read More →

A sky full of air, oceans made of water, and the presence of life are some of the things that set Earth apart from other planets. Learn what else makes Earth unique among the planets in our… Read More →

Forensic science is the use of scientific knowledge to solve a crime. All evidence is important to a forensic scientist, from fingerprints and bones to hidden messages and even bugs. Discover Read More →

From the Great Red Spot to its famous moons, the biggest planet in our solar system, Jupiter, is truly a marvel. Find out more about this gas giant and see how it compares to other planets in Read More →

After Earth, Mars is the most explored planet in our solar system. Rovers travel across its surface to find out answers to scientists' questions. What is Mars like? Did it ever have life?… Read More →

Embark on a journey to get closer to the sun than you ever have before. Readers will discover more about Mercury, the smallest planet in our solar system, and see how it compares to the other Read More →

Mesopotamia may have been the world's first civilization. It has a history spanning over six thousand years! Learn about the different people who lived there. Find out what jobs they did, how Read More →

With nanotechnology, engineers use atoms to change the world. Nanotechnology is the science of rearranging atoms and molecules. By studying nature, scientists have used this tiny technology… Read More →

Did you know that Neptune is the windiest planet in the solar system? Discover more about Neptune in this exciting look at the farthest planet from the sun. Access a downloadable 3D printer… Read More →

Humans have imagined creating robots for thousands of years. Robotics is the science of creating machines and devices that automatically perform tasks. From ancient robots to artificial… Read More →

Blast off in this exciting exploration of these essential space machines! When were rockets invented? How fast do they go? Learn about the history and uses of rockets, plus explore how… Read More →

Rovers traverse parts of space that people can't easily get to. While they explore they use special tools, take samples, and search for signs of life. Readers will love learning about these… Read More →

How can you watch your favorite TV shows almost anywhere? How do scientists learn what's happening in far-off galaxies? Readers discover how satellites make our lives easier and keep people… Read More →

Learn about Saturn's vast and beautiful network of rings, and see how it is similar to or different from other planets. Access a downloadable 3D printer model from NASA via Page Plus QR codes. Read More →

How do we know if there is water on Mars? How do we know what planets look like? We send probes to look around! Readers learn how scientists use space probes to study planets in our solar… Read More →

Astronauts live and study on space stations as they orbit Earth. What are space stations? How do they help scientists learn about Earth and space? Learn about early space stations, how the… Read More →

How far can telescopes see? How do scientists get huge telescopes into space? Find out how big space telescopes help us learn more about our universe, plus discover how scientists will use… Read More →

The Aztecs built an empire on two swampy islands in Lake Texcoco. They thrived until Spanish explorers came and took control. From farming to warfare, learn about the daily life of the… Read More →

The Inca Empire stretched far and wide across mountains and valleys during the fifteenth and sixteenth centuries. The Inca people had no written language, but they had many resources such as… Read More →

The Maya civilization flourished for thousands of years in Mesoamerica. Learn about the lives of the people who lived there—including what they ate, the clothes they wore, and the gods they… Read More →

Vikings were raiders who stole land and riches, but they were also farmers and explorers. Uncover experts' theories about why Vikings started raiding, where they were from, where they… Read More →

This cold, giant plant may be far away, but scientists know lots about it and are striving to discover even more. Learn all about Uranus and what makes it such a cool planet. Access a… Read More →