Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

Measure the porosity of rocks by submerging them in water. Measure how much water each rock "drank," by measuring the difference in water volume.

This science fair project idea studies the acidity of rain water and whether the acidity is the same on all rainy days or does it fluctuate.

High school students learn about resistance, resistivity, and if copper is the best metal conductor in this great physics science fair project idea.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

High school kids learn about fruit fly ethology in this cool lab that determines fruit fly movement and behavior under different conditions. Check it out.

Check out this cool science fair project idea to explore short and long term memory and whether there is gender differences in memory.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

The projects describes the correlation between Gravel Run and Centreville Landing in terms of pH, dissolved oxygen, turbidity, and temperature.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Help your kindergartener identify and sort eight different kinds of common seeds on this "seed wheel" plate you can use all growing season.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

Examine the effect of pressure on carbonation in soda.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

This experiment observes inattentional blindness and investigates whether certain age groups or genders are more likely to demonstrate this phenomenon.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

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

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!