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This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This experiment evaluates if the temperature of the environment that you work in affects your ability to perform mental tasks.

This science fair project explores how salt and sugar affect the melting rate of ice in water.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Study the effect of music on blood pressure. Compare blood pressure readings before and after the listening session. Analyze results, write a detailed report.

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Evaluate the ability of a biodegradable dish detergent to increase the penetration of water in hydrophobic soils.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

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.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

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

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

In this experiment, you will evaluate whether or not a diet that is supplemented with "brain-enhancing" foods can help improve memory.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Free science fair project idea examining how different types of water affect plant germination and growth.

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.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Explore the role of starches as thickening agents in food, and learn about the chemical properties of starch in the process.