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

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

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

Check out this fun science fair project idea to explore the process of diffusion in a cell and learn the difference between osmosis and diffusion.

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

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

Find out whether matching resonant frequencies can cause objects to shatter.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project investigates why the number of visible stars changes from place to place.

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

Find out whether matte or shiny nail polish lasts longer.

This experiment will explore whether adding different substances to a gel affects its strength.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

This science fair project idea investigates food preference of birds.

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.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

Science fair project that explores the variety of webs that spiders weave and collect specimens for identification.

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.