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

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

How was our solar system created? Read a bit about one of the most well-known theories in this worksheet about the Big Bang.

Use this blank periodic table to work on your memorization of the table for your next quiz!

Help your child understand pollination with this informative worksheet, complete with a diagram.

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

These STEM design challenge cards ask learners to build something new for a specific reason or purpose and are a great way to foster creative thinking.

Learn all about essential laboratory equipment with this hands-on worksheet for fourth and fifth graders!