It's fall in a grassy field in North America. A monarch butterfly flaps its colorful wings and flies high into the sky. The butterfly has begun a 2,000-mile journey to Mexico! Along the way,… More →
Grades PreK - 3
It's a cool fall day in a forest. A tiny brown wood frog hops under a log and covers itself with leaves. Soon, the sky turns gray and snow begins to fall. When the snow touches the frog, its… More →
The fruit of a palm tree changes from green to orange when it becomes ripe. Its color lets monkeys know when the fruit is ready to eat. The bright purple color of a flower tells a hummingbird More →
A tiger's orange and black fur blends in with the tall grass. Its prey can't see the large cat as it hunts. A ladybug is bright red with black spots. The insect's colors tell birds that it… More →
On a cool fall day, a timber rattlesnake slithers into a small hole on the side of a rocky hill. The underground den is packed with hundreds of snakes lying on top of each other. The snakes… More →
It's a fall day in a grassy field. A thirteen-lined ground squirrel dives into its burrow. The small animal makes a bed of grass, curls up into a little ball, and lays down to hibernate. It… More →
Crisp leaves rustle on trees in fall. Furry little brown bats dart and circle around the entrance to a cave before flying inside. Using their sharp curved claws, they grip the cave's rocky… More →
In spring, pale green shoots poke out of the soil and soft pink buds grow on branches. As the seasons change throughout the year, different colors appear. Early readers will be taken on a… More →
Measuring 1,300 feet long, the world’s biggest ships are more than 300 feet longer than the famed Titanic! These shipping vessels are so big their loads of containers, stacked on end, would… More →
Massive aircraft carry space station components, multiple school buses, and even smaller airplanes! The world’s largest airplanes are more than 20 feet longer than the Wright brothers’ famous More →
Huge blades, giant tracks, and powerful engines enable these colossal bulldozers to wipe out anything in their paths. They can even move 90 cubic yards of material per pass! Plow through more More →
At nearly 30 feet long and 14 feet high, these massive tractors tear up fields with incredible power. After a day of ripping cropland, the points even glow red hot! Young readers will harvest More →