Grade 4

South Sudan’s recent beginnings stem from people seeking freedom and peace. As the nation grows, the values of tribal strength and independence add to the natural wonder that spans across the More →

Earth is the only home humans have ever known. But there is so much to learn about it! From what the planet is made of to how it likely formed, this informative title will take readers on a… More →

Karts aren’t just for the amusement park. They can reach speeds up to 160 miles per hour! Many racing greats have gotten their start on the local kart tracks. Reluctant readers will love… More →

Smartphones put a camera in just about everyone’s pocket, but it hasn’t always been so easy to take a snapshot. The 18th century brought a new innovation that allowed people to easily… More →

Pacific waves wash upon the shores of Peru’s coastal beaches while people spend their days surfing and soaking in the sun. The Andes stretch through the center, creating a rugged landscape… More →

Uranus is an ice giant that spins completely on its side! Scientists have studied it since its discovery in 1781, but Uranus remains one of the solar system’s most mysterious planets. In… More →

Mercury is the closest planet to the Sun! It may be small, but it is full of extremes. Temperatures range between -300 and 800 degrees Fahrenheit! As it zooms around the Sun every 88 days,… More →

Not even a century ago, a computer took up an entire room. Today, a computer can fit inside your pocket! Over decades of technological advancement, the personal computer has shaped the world… More →

If humans ever make it to Saturn, they won’t be able to land on its surface. This enormous planet has no solid ground! Beyond its seven magnificent rings, Saturn swirls with dense clouds of… More →

A dragster can finish a race by the time you finish reading this sentence. These speed demons are the fastest accelerating vehicles in the world! Readers will the get a rush learning about… More →

Jupiter is the biggest planet in the solar system! This gas giant is also one of the most fascinating. From its famous Great Red Spot to its dozens of moons, Jupiter holds several mysteries… More →

The 20th century approaches, and life is about to change forever! Inventors across the world race to invent and innovate automobile designs. Which ones will end up on top? Anyone who has ever More →