Experiment with the wonders of pressure and condensation by crushing a soda can with nothing but air and water!

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.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

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

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

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

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

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

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

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science fair project idea examines whether music has an effect on a person's ability to complete a simple task that requires concentration.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

Learn about the factors that influence group conformity.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

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

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.