Ages 9 to 10

Millions of years ago, Giganotosaurus was an eating machine. With ridged teeth and sharp claws, it once hunted herbivores even bigger than itself in swampy lands. Now, this big and fast carnivore captures the interest of readers. Take struggling and...

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...

Millions of years ago, Spinosaurus was one of the largest dinosaurs around. With a distinctive large sail and crocodile-like snout, it once prowled the deep waterways for large fish and sharks. Now, this huge predator captures the interest of readers...

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...

Taekwondo is "the way of the hand and foot." Striking with precision and speed, this martial art is mostly used for self-defense, though competitions can be a thrill to watch. Both casual fans and aspiring athletes will read about the dedication and...

A whistle blows. Two wrestlers grab each other in tight holds. One twists and the other turns. Then one quick move and bam. A takedown! A wrestling match is a thrill to watch and one of the world's oldest combat sports. Both casual fans and aspiring...

Punch, punch, spin and kick! Kickboxing is an intense workout that works both the mind and body. Combining both boxing and kicking elements, this sport is mostly used for self-defense, though fighters can use competitions to level up. Both casual fans...

Karate takes focus and stamina. Each move is done with strength and precision. Powerful strikes and kicks are a thrill to watch but sparring in this open-hand sport takes time and practice to learn. Both casual fans and aspiring athletes will read about...

Ding! Round one begins and the fighters start swinging. Jab, uppercut, and then wham. Knockout! Boxing bouts are a thrill to watch and this high-interest book packs a powerful punch for sport fanatics. Both casual fans and aspiring athletes will read...

Two martial artists trade strikes. There's intense grappling, hard punches, and then bam. The fighters are down on the mat, and one taps out. A new champion is made! An MMA, or mixed martial arts, fight is a thrill to watch and this high-interest book...