Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Challenge your learner to design and build a city of their own in this creative engineering activity.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Help your young learner discover why the insects that a spider eats stick to its web but the spider doesn't.

Hunt for natureâs treasure, the many different products made by trees!

Teach your child about healthy foods and how to make a meal that is good for them with this fun activity that you both can do together.

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.

Reinforce your child’s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Help your child make a beautiful homemade sandcastle that will last!

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.