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Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

Science fair project that examines various techniques for removing wrinkles from polyester garments to understand why polyester garments become wrinkled.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Determine the maximum distance traveled by projectiles launched at an angle. Use some cool math to figure out at which angle your projectile will go farthest.

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

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

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

This science fair project investigates how temperature of a room affects the burn rate of a candle.

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

This science fair project idea determines the probability of a coin landing heads or tails.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

A cool physics science fair project idea for 7th grade exploring the application of distance, velocity, and time equations.

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Start your toy engines -- this is going to be a fast and friction-filled race!