This project examines whether humans can intuitively grasp numeric values greater than three.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.

This science fair project idea explores if objects dropped from a high distance will equal a greater impact force than the object dropped from a low distance.

This science fair project idea investigates how images are influenced by changes in light.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Determine the maximum distance traveled by projectiles launched at an angle. Use some cool math to figure out at which angle your projectile will go farthest.

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

This experiment will investigate whether reward or punishment is more apt to motivate people.

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

Evaluate gender differences in processing visual information.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

This science fair project idea compares the mass and density of objects.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

This experiment examines if space objects become round after reaching a certain mass.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

Do thick liquids flow faster than thin liquids? Examine water and syrup's viscosity and inertia to learn about the Reynolds Number, laminar and turbulent flow.

In this science fair project, students evaluate the alleged pain-relieving properties of amber.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.