Find out whether putting something on top of a plant will inhibit its growth.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.

This project compares the strength of one, two, and three-ply toilet paper.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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!

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

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

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.