Dark clouds form overhead. Strong winds blow debris across the yard, and a loud, droning siren pierces the air. Time to seek shelter: a tornado has been spotted! This low-level title… More →
Grade 3
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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 →
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 →
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 →










