Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Find out which kind of bubble wrap fares best when put in impact.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

In this activity your child will create their very own marble maze!

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

In this project children practice the scientific method while playing with puffy paint.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

Examine how a battery can be made from everyday materials.

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

In this experiment we use Scotch Guard to make sand that resists water.

Are you able to endure long periods of exercise? Find out if snorers can exercise longer than non-snorers.

This science fair project idea investigates how color affects temperature.