In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

Plants and light seem to be good buddies, but how far does the friendship really go?

Learn how different types of soil affect how animal tracks form in this experiment!

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Start your toy engines -- this is going to be a fast and friction-filled race!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Word color association is just a fancy way to talk about the way we connect colors with words.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.