Where'd that shadow come from? Next time a scary shadow crosses your path, you'll know just what to look for.

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.

Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

Discover the science behind an ages-old 4th of July tradition with this firework diagram.

Did you know that sound is actually caused by movement? Vibrations of particles create the sound that we hear.

Learn about some of the most common forms of energy with this helpful one-pager for third graders!