Research currently available fuel sources, and fuel manufacturing and processing techniques. Propose an alternative fuel source.

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

Science fair project that examines the benefits of the plant enzyme: pectin methyl esterase (PME). Where is PME found in the plant? What does it do chemically?

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

The objective of this experiment is to find out if cooked beans grow faster, if at all, than uncooked beans.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

In this project students experiment with making music using only glasses of water.

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Create homemade seed packets with your kids. This activity combines your kids' love of science and the outdoors with a little writing and drawing fun.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Science fair project that uses iodine vapors to develop latent fingerprints on a non-porous object.

Do different types of oil mix or stack? Find out in this science fair project idea!

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.