This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

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.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Find out whether packaged seeds actually do expire in this new science fair project idea.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project idea determines if the color of light affects the growth of plants.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project idea explores whether talking to a plant will help it grow.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.