What is water energy? Also known as hydro power, water energy is one of our important renewable resources!

The silverback gorilla is a special animal. This magnificent male is part of an endangered species. Complete this sheet to learn all about this gentle giant.

The horned lizard has a scary exterior but a gentle personality. Your little student can learn about this North American lizard with this worksheet.

The California condor has been brought back from the brink of extinction. This worksheet will help your little bird lover learn all about the condor.

Whether you say buffalo or bison, it is still the largest land mammal in North America. Discover a bit more about this majestic animal.

Playing in the dirt was never so educational! Shake things up with this fun experiment about soil.

What is biomass energy? Learn about an important form of renewable energy with this colorful worksheet.

Learn about the amphibians and reptiles of Yellowstone National Park.

Dive into the deep, vast world of ocean science with this introductory sheet on the world's different oceans.

What's in the ground beneath our feet? Explore the science of soil with your child using this handy printable!

Quiz your little scientist on his knowledge of the soil layers! He'll be reviewing some important earth science concepts and key terms.

Did you know we eat all kinds of plant parts, from the root to the flowers? Discover the importance of plants in our diet with this fun worksheet.

Learn the ins and outs of one of the body's most important organs: the heart!

The grizzly bear once roamed across most of North America; now its habitat has shrunk to the northwest. Discover more about the grizzly with this worksheet.

Little gardeners, get to know your plants! See the cycle of a plant from its birth to adulthood, and read a bit about photosynthesis too.

Almost half of all known fish species call ponds, lakes, rivers, and other freshwater habitats home. Learn about freshwater fish in this worksheet.

Take a plunge under the surface of the earth! With this worksheet as your guide, you may explore the geological processes of our planet.

Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

In this worksheet, kids learn about friction by answering questions about the amount of friction in different situations.

Learners will get to know the bald eagle, the national bird of the United States and an inhabitant of Yellowstone National Park.

Where is the Earth in space? Check out this worksheet that describes where weÃand some of our neighborsÃare in our galaxy.

Space enthusiasts will love learning about Freedom 7, the first manned American space mission.

Ever wonder what the earth is made of? Help your little scientist to examine the different types of soil particles with this worksheet.

Take a look into the layers of the earth with this soil science sheet! Your little digger can learn about the different soil layers and what lives in each one.

Encourage your little environmentalist to learn about composting! Children will boost their reading skills as they learn what compost is and how it helps the environment.

Children learn why the light from the sun seems white to us, why we see objects in color, and why the sky is blue in this beautiful and fascinating worksheet.

Get to know the Apollo 11 space mission in this science and history worksheet!

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet.

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.