Ages 9 to 10

With a short bill to scoop up food, the bird-like Gallimimus once sprinted across the land on two legs. At top speeds, it was too quick for carnivores to catch. Now, this light and fast dinosaur captures the interest of readers. Take struggling and...

With a whip-like tail and equally long neck, Diplodocus was once called the "longest dinosaur." It could whip its tail at supersonic speeds, sending meat-eaters scurrying away in fear. Now, it captures the interest of readers. Take struggling and...

As one of the most famous long-necked dinosaurs, the giant Brachiosaurus shook the ground with every slow-moving step. This huge sauropod once lived in herds and ate a ton of plants to sustain its incredible body size. Now, it captures the interest of...

Millions of years ago, Allosaurus was a fearsome giant predator. With sharp claws and knife-like teeth, it once chased down young sauropods and Stegosauruses to eat. Now, this large carnivore captures the interest of readers. Take struggling and...

Float through space with six wonders of engineering while reading the STEM-focused Amazing Space Techs. Each chapter presents easily digested information on what makes one of the world's greatest airports unique, with details on its history, special...

Ride the rails of six wonders of engineering while reading the STEM-focused Amazing Railroads. Each chapter presents easily digested information on what makes one of the world's greatest airports unique, with details on its history, special features, and...

See the power of six wonders of engineering while reading the STEM-focused Amazing Dams. Each chapter presents easily digested information on what makes one of the world's greatest airports unique, with details on its history, special features, and...

Climb to the top floor of six wonders of engineering while reading the STEM-focused Amazing Buildings. Each chapter presents easily digested information on what makes one of the world's greatest airports unique, with details on its history, special...

Cross the span of six wonders of engineering while reading the STEM-focused Amazing Bridges. Each chapter presents easily digested information on what makes one of the world's greatest airports unique, with details on its history, special features, and...

Soar over six wonders of engineering while reading the STEM-focused Amazing Airports. Each chapter presents easily digested information on what makes one of the world's greatest airports unique, with details on its history, special features, and...

Millions of years ago, Quetzalcoatlus was once the biggest flying creature on Earth. With a wingspan the size of a small plane and a neck as tall as a giraffe, this flying reptile once soared over the land. Now, it captures the interest of readers. Take...

With strong flippers and shark-like teeth, Mosasaurus once ruled the oceans. This sea reptile used to swim all over the world. Now, it captures the interest of readers. Take struggling and reluctant readers on a journey exploring this Cretaceous marine...