Grade 4

Many people fear the great white shark. But an even deadlier animal lurks in the world’s oceans--the killer whale. What would happen if these two faced off? This book looks at the advantages… More →

Deep in the Rocky Mountains, grizzlies and wolves constantly compete for food. This high-interest title examines the claws, teeth, and super senses that keep these apex predators at the top… More →

Who would dare challenge a lion? Cunning spotted hyenas take on the king of beasts often on the African savanna. Backed by clans of up to 80, they fight lions for food and territory. In this… More →

Metamorphic rocks form deep below EarthХs surface. Over thousands of years, they make their way to the surface. Then they are collected for use as building materials, sharpened tools, and… More →

Sedimentary rocks are the only type of rocks that contain fossils! But thatХs not the only reason sedimentary rocks are important. Scientists study the rocks to learn about EarthХs history,… More →

The enormous ankylosaurus looked intimidating. But this dinosaur ate only plants! Tough armor protected the ankylosaurus from bites. When attacked, it swung its club tail to knock out foes!… More →

The huge diplodocus had a long neck, a long tail, and a 2,000-pound heart! As it grazed the land for low-lying plants, the dinosaur whipped its tail at dangerous enemies. In this… More →

Snowflakes float gently through the air. Aged cheeses add the perfect flavor to an afternoon snack. Gas stoves boil water for pasta. Each of these everyday objects contains crystals! They are More →

The stegosaurus is known for the row of tall plates that stick out of its back. But this dinosaur had many other fascinating traits! Using a pointed beak and long tail spikes, the stegosaurus More →

Time for a fossil hunt! Digging through a layer of sedimentary rock, scientists uncover many relics of prehistoric Earth. Tiny trilobites prove that a vast desert was once an ocean. Huge… More →

Gemstones are more than just pretty rocks. These stones serve a purpose far beyond jewelry or decoration! In this book, beautiful photos and interesting text combine to create a fascinating… More →

For most of us, igneous rocks are no more than a stoneХs throw away. These underrated rocks make up more than half of EarthХs crust! Not only that, but they have many uses in building,… More →