Are you aware of how many endangered species there are in the world? Use this trivia sheet to test your knowledge of some beautiful but endangered animals.

Learn about the science behind one of nature's most awesome spectacles: monsoons.

Learn about the "dwarf planet" in our solar neighborhood. There are more Pluto facts to learn, if you figure out the answer to the question on the page.

Introduce your student to an endangered species, Przewalski's horse, with this information sheet. They can color the illustration as they read.

Learn facts about Mars, the great red planet in the night sky. There is more find out about space by answering the question at the bottom of the worksheet.

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

Why did the fox cross the road? To look for the chicken! This fun worksheet is jam-packed with fun facts about foxes!

This is the story of our solar system. Learn about the life of Nicolaus Copurnicas and his great discovery. Learn more by answering the question at the bottom.

Let your child explore the vocabulary associated with Earth's landforms with this colorful word search.

Did you know that cheetahs are the fastest land mammal? This fun worksheet is jam-packed with fun facts all about the cheetah.

Find out everything you need to know about lightning rods! These metal poles have quite a special relationship with lightning.

Did you know a baby kangaroo is called a joey? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about the kangaroo!

Help your child read this page about the Sumatran rhinoceros, where they can color an illustration as they learn about why this animal is endangered.

Who is this Frankenstein guy anyway? He's not the monster -- he's the guy who invented him.

How much do you know about man's best friend? This fun worksheet is jam-packed with fun facts about dogs!

Kids can explore ideas of storytelling and science as they fill in this comparison grid with their opinions. Start a conversation of ideas with this worksheet!

Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

Searching for a worksheet to help your fourth grader with science? This printable will help him practice astronomy vocabulary.

Can you match the scientist with the unit of electricity or power that is named after him?

Learn Jupiter facts in this worksheet. Your child can test his knowledge of the solar system by answering the trivia question at the bottom of the page.