Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Learn whether writing things down really makes things easier to remember.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

In this science fair project you will make a model of a cell membrane using very simple material.

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

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

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.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!