The periodic table of the elements is an important classification system of the most basic particles that make up our world!

Without light sources, we wouldn't have any light. Can you imagine a world without any light sources?

Did you know that light could bounce? Set up a light obstacle course with a few mirrors and watch light bounce around your room.

It's a bird! It's a plane! It's Physics Man! Test your knowledge of the physical world with this fun questionnaire that takes physics to a super-heroic level.

Atoms are some of the tiniest particles that make up our world. Give kids some perspective with this worksheet that shows kids just how small atoms are.

Get a brief history of the atom with this introductory page for young physicists!

Teach your child the difference between potential and kinetic energy with this introductory worksheet.

Teach your little scientist the difference between physical and chemical changes, on a molecular level.

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

What is the difference between condensation and evaporation? Learn about natural cooling and heating processes that are caused by changing states of matter!

Grab your trusty flashlight and get ready for a scientific treasure hunt!

During the Gold Rush, people weren't sure if they found gold or something else, and these easy steps would help them be sure.

This cool physics worksheet helps kids learn how centripetal force and centrifugal force can explain why short track speed skaters don't fall over during turns.