What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

Take a dive into the candy jar with this yummy science experiment.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

How do organic materials become soil? This science experiment measures what materials biodegrade.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

Engineers in training can get started with this simple wheel-and-axle construction activity.

After completing this fun science project, your child will have a better understanding of plants, and they may even develop a green thumb in the process!

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Cleaning can be a chore, but not with this sudsy experiment!

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Do you think heat can affect a plant's growth rate?

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

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