These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

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

This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Make sourdough bread...and learn some colonial history and modern science in the process!

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

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

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

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

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

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

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!