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What's the difference between renewable and non-renewable energy? Help your student discover the various forms of energy we use each day.

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

Read about Alexander Graham Bell, the man who made it possible for us to stay connected all day long, in this biography that comes with a science experiment.

On this worksheet, kids learn all about the look and location of Uranus, and they get to cut out a picture to use in their own Solar System diagram.

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