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This project examines what types of objects burn and which burn faster and cleaner.

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

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

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

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

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

What happens when colored beams of light mix? You might be surprised.

This project examines whether people's taste perception is influenced by what they see.

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

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea determines what household items are good conductors of electricity.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

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?

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!