Grade 5

From the central mountains and valleys to the rain forests of La Mosquitia, Honduras is a land of natural beauty. Not every wonder in the country is nature-made, however. The Copán Ruins in… More →

If emotionless monotones are all that come to mind when you think of robots, it’s time to rewire your motherboard. Open this book and let the renegade robots within inspire you to build your… More →

With fossils as their only clues, scientists have created an image of life millions of years ago. Try your hand at a scene in the world of the dinosaurs with the help of this how-to-draw… More →

When it comes to lemurs, it's a woman's world. Females rule—they eat first, win all family arguments, and fight enemies on the front lines. Learn why you'd want to be “one of the ladies” in a More →

Recon Marines are sent on high-risk knowledge quests. They travel inside enemy territory to gather intelligence for military leaders. With the top secret information they collect, the U.S.… More →

Animals with an appetite for hedgehogs must work hard for their dinner! They need a pain tolerance for sharp spines and the strength to pry tightly curled bodies. Get a feel for why hedgehogs More →

When kangaroos gather in large groups, they get loud and physical. Males duke it out in boxing matches, jumping and jabbing with feisty determination to earn the “dominant male” title. Be… More →

Ostriches are birds that can't fly. They take it in stride, sprinting in short bursts instead. When ostriches can't run from danger, they face it head on. Well, with their heads on the… More →

Mountain climbing is about the challenge. It's about rising above difficulties to reach the breathtaking views that wait atop mountains. Let this book get you geared up for rock climbing,… More →

Considered the most capable multi-role fighter, the F-16 Fighting Falcon can weather any storm. The streamlined aircraft will fly more than 500 miles to meet the enemy, locate targets under… More →

With a flight deck longer than three football fields, the Nimitz aircraft carrier is the largest warship at sea. The 6,000 crew members and 80 aircraft onboard make each ship a military hub… More →

Killer bees have the mob mentality. They attack in large groups and refuse to let up without a fight. A group of killer bees can remain wound up for up to 24 hours! Learn why you should never More →