How do you think our universe will end? With this worksheet, explore some of the common theories, and then come up with some of your own!

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

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

Don't let school year learning slip away this summer: use this chemistry worksheet to practice identifying elements.

Did you know that some caribou travel 3,000 miles in a year? This fun worksheet is jam-packed with fun facts about the caribou!

This Louis Pasteur biography goes over his accomplishments, and includes a bacteria-based science activity at the end!

Learn facts about Venus, the planet that shines the brightest in our night sky! Then practice your knowledge of the solar system with bonus trivia at the end.

This Thanksgiving, serve up some Thanksgiving science learning and find out all about the chemicals that make up a typical Thanksgiving meal.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Learn more about the swirling, whirling science behind tornadoes with this wild worksheet.

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

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

Learn all about the science of the movies and the basic concepts behind how they work.

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

Learners will discover a simple overview of the human muscle system in this introductory worksheet.

Hypothesis, observation, data...with so many terms, learning the scientific method can be tricky. Learn the steps by helping Dr. McSquare sort out his reports.

Dr. McSquare is here to help kids learn the scientific method. His reports are all in disarray--can your child sort label each part with the correct step?