The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project examines how seeds hitchhike on animals and clothing.

This experiment tests which gender is better at catching how a magician performs his tricks.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Construct batteries that make electricity from fruits with this fun science fair project.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

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

The project investigates how friction affects motion by using different surface textures.

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 that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

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!

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

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.

Find out whether matte or shiny nail polish lasts longer.

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.

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

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 examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

This science fair project idea produces varying pitches of sound.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.