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.

Meet the red wolf, an endangered species of animal that was once very common, but in the past 50 year nearly became extinct!

Go from a butterfly beginner to an expert with this worksheet, full of pretty butterflies and tons of information about where butterflies live.l

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

Discover the details of desert plant life in this informative worksheet!

Discover how cover crops enrich soil and support healthy crop growth with this research-based worksheet for fourth and fifth graders!

Discover how water flows in this informative environmental science worksheet!

Take a peek into a temperate forest ecosystem with this food web worksheet for fourth and fifth graders!

Warm up your scientific thinking with this colorful worksheet!

Introduce your budding scientist to chemical reactions with this simple and fun science experiment!

This worksheet features Uranus facts. Did you know this planet is blue and spins on its side?

Ready for a truly electrifying lesson in science? Find out how electricity forms and what makes a lightning bolt!

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

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

This packet of worksheets introduces children to food webs, an important life science concept.

Get swept up in this comprehensive worksheet about the awesome power of dust storms.

Where do flower babies come from? Find the answers in this word search about plant reproduction!

Did you know that light could bounce? Set up a light obstacle course with a few mirrors and watch light bounce around your room.

Increase your child's vocabulary and knowledge of the scientific world around him with a single sheet!

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

Meet Michael Faraday, the inventor of the first electric motor. Without Faraday, who knows if we would even have working cars, airplanes or even clocks!

Get to know one of the most unique and colorful monkeys, the red-shanked douc langur. Read about why they are an endangered species with this info-sheet.

Dragonflies are some of the oddest looking insects in the world, so it's appropriate that they have so many unique characteristics. Read all about them!

Budding paleontologists will refer to a word bank to identify 10 dinosaur-related vocabulary words in this playful word search puzzle.

An energy pyramid is a simple way to graphically show how energy flows in an ecological community; somewhat similar to the food pyramid.