Determine how good we are at direct and indirect observation.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

Science fair project in which you will start a fire from scratch without using matches or a lighter.

This science fair project idea examines which is the best way to get rid of water stains (stains caused by just water) on fabric.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

Make thinking about college fun by working with your teen to design and plan a Road to College board game.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Science fair project that determines whether mass and weight are the same or different.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

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

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Students will investigate the illumination durations and intensities of different luminous substances of different colors of the spectrum.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

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.

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

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Science fair project that determines how we can change potential energy into kinetic energy.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.