In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Give your child a chance to experiment with how things grow. And throw in something extra to up the fun factor even more...her very own grass pet!

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

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 project is to examine the ways in which a passive solar house may contribute to conservation of energy.

The goal of this project is to create an exciting topographical map out of dough.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

This science project idea's objective is to understand how TV mysteries change expectations of mystery stories.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

This science fair project idea determines whether volunteers remember more information presented orally or visually or kinesthetically.

This science fair project idea tests the efficiency of short term memory.

Test your friends to find out if you can replicate the placebo effect's incredible results.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

In this design challenge, your child will create a parachute for a small toy using typical household items.

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

This science fair project idea identifies clouds as a means of predicting the weather.