Under $20

The original heroes from The Lightning Thief are reunited for their biggest challenge yet: getting Percy to college when the gods are standing in h...

Percy Jackson and the Olympians: Titan's Curse: The Graphic Novel, The

In his continuing quest to earn college recommendation letters from the gods, Percy has to pet sit the goddess Hecate's polecat and giant mastiff d...

All kinds of pets can be found in this Hidden Pictures puzzle book. It features over 100 pet-themed scenes and more than 1,900 hidden objects in ou...

When Roger Duvoisin first introduced children to his proud and silly goose, Petunia, in 1950, it was love at first sight. Those children have grown...

Gerald and Piggie are best friends.Gerald is careful. Piggie is not.Piggie cannot help smiling. Gerald can.Gerald worries so that Piggie does not h...

The ultimate pocket-sized guide to more than 200 of North America’s feathered residents. Can American dippers stay underwater for as long as half a...

Explore all the wonders of the ocean in one pocket-sized reference guide!From colossal whales to microscopic plankton, our vast oceans are teeming ...

The ultimate pocket-sized guide to more than 120 sports, from soccer to mountain biking.Ever wonder which is the oldest sport? Or how the Olympics ...

Pocket Genius: Animals highlights the lives of nearly 200 animals — what they eat, what eats them, where they live, and how big they are. From tiny...

Whether it's the industrious ant, the breathtaking Monarch butterfly, or the multi-legged centipede, children will discover the fastest, strongest,...

From the factory to the road, browse through more than 170 cool cars — from hatchbacks to hybrids — in Pocket Genius: Cars. Trace the history of th...

Find out about more than 70 cat breeds, including their origins and characteristics, in this pocket-sized encyclopedia. This cat-alogue packs a who...

Pocket Genius: Dinosaurs profiles more than 140 prehistoric animals and features fossils, skeletons, anatomy, and history as well as species includ...

Ideal for every young dog lover, Pocket Genius: Dogs is packed with information that makes learning about dogs even more exciting. How did dogs evo...

A visual look at the planet we call home, Pocket Genius: Earth delves into Earth's geology and geography, examining oceans, mountains, deserts, clo...

Find out about all 118 elements, the building blocks of matter that make up our entire universe, in this pocket-sized encyclopedia. Discover all th...

Focusing on bones and joints, blood and the heart, lungs and breathing, the digestive system, brain, nerves, senses, and the life cycle, Pocket Gen...

Discover the fascinating world of inventions and technology. From the first tools to the latest gadgets, Pocket Genius: Inventions showcases key in...

Profiling nearly 200 types of rocks and minerals from volcanic rocks and granite to sparkling diamonds and explosive sulfur, Pocket Genius: Rocks a...

Covering the basic principles of science, including matter and materials, energy and forces, and the living world, Pocket Genius: Science is a juni...

From the great white to the tiny dwarf lantern, Pocket Genius: Sharks profiles more than 150 sharks and rays and tells what they eat, where they li...

From marvelous galleries of the Big Dipper, Little Dipper and other constellations to in-depth looks at Mercury, Venus, Earth, Mars, Saturn, Uranus...

Discover what makes each US state unique in this ultimate pocket-sized guide to the amazing cultures, peoples, places, animals, landmarks, and hist...