This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

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.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

In this science fair project, students make their own rain gauge to measure rainfall.

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.

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

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

In this design challenge, your child will make a bottle rocket using typical household items.

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

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

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

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

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

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

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.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Make a spring collage with your child to get them outside and those creative juices flowing!

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

If your mom likes flowers, make her a sweet gift that she'll treasure with this fun craft, a pretty Pressed Flowers Card!

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

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

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!