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 →

A beautifully vast landscape and respectful culture fill the country of Cambodia. Despite a history of persecution and danger, Cambodians celebrate their freedom and customs with joy! In this 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 →

In 2006, Pluto was reclassified as a dwarf planet. Small, rocky dwarf planets make their home on the outer edges of the solar system. Scientists use telescopes to study Pluto and the dwarf… 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 →

Indy cars got their start on a car factory test track. That track went on to become one of the most famous racetracks in the world! Take in the long history of these open-wheel racers and… More →

Only 12 humans have walked on the Moon. But scientists have learned a lot about Earth’s night light. We know how it was formed, about its relationship with Earth, and its surface features.… More →

Many consider Thomas Edison the inventor of the light bulb, but this world-changing invention has a long history. Since the 19th century, many have worked to create and improve the light… More →

Whether Lamborghini or Ferrari, sports cars turn heads! These flashy cars look cool but are built for speed. Through the years, sports cars have pushed design, gone electric, and even reached More →