Did you know that a duck's feathers are waterproof? From waddling ducklings to flying adults, eager students will discover how these cute birds develop.

The solar system is made up of planets, moons, asteroids, comets, meteoroids, and more. Young readers will learn about the bodies that make up the solar system and how they interact with each other.

Penguins must complete their life cycle in very cold temperatures. To protect their eggs from the cold, penguins use brood patches. Students will watch a penguin chick hatch from an egg and grow into an adult.

Coral reefs are found in tropical waters and host a variety of ocean life. Young readers will learn about how they form over time, the different ways they form, and the creatures that call coral reefs home.

The life cycle of a frog takes place in water and on land. It begins in spring with a male frog croaking a song to attract a female. Young readers will read about and watch an egg develop into a tadpole and then into an adult frog.

A female butterfly lays eggs on a leaf to begin the butterfly life cycle. The eggs hatch into caterpillars, and caterpillars form chrysalises to change into butterflies. Students will follow a butterfly as it grows from an egg into an adult.

Bees begin their life cycle as eggs in honeycomb cells. Every day, a queen bee can lay as many as 2,000 eggs. Young readers will study a bee's growth from egg to grub to pupa to adult.

Dogs begin their life cycle as puppies in a litter. A newborn puppy sleeps for 20 hours a day as it grows! Children will watch a puppy move from a large litter to a loving home as it grows up.