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Does your learner ever wonder what makes the Earth dark at night and bright during the day?

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.

Study the night sky with this hands-on science worksheet for third and fourth graders!

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.

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 a bit about meteors, asteroids and comets as they travel across the night sky. Can your child round out the page by adding color to these orbiting rocks?

If you were a mad scientist, what modern-day version of Frankenstein's monster would you create?

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

Did you know an elephant can eat 300 pounds of food in one day? This fun worksheet is jam-packed with fun facts, a word search and trivia, all about elephants!

Fourth and fifth graders will cut out and assemble a human skeleton from paper in this engaging life sciences printable.

Discover how water flows in this informative environmental science worksheet!

Test your knowledge of electrical energy with this third- and fourth-grade worksheet!