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

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Have your child kick off their summer vacation by making a miniature water slide!

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.

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.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project teaches students about wilting and browning of salad greens.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

For a fun family activity to introduce your child to genetics, have your child go on a search for dominant and recessive family genes!

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

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

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!