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.

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!

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Examine whether males or females are more likely to have a higher center of gravity.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Study the effect of music on blood pressure. Compare blood pressure readings before and after the listening session. Analyze results, write a detailed report.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

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

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

This science fair project examines how carnivorous plants digest insects, and whether the plant can use nitrogen in the soil to compensate for lack of insects.

How powerful is the reaction between baking soda and vinegar? Find out here!

This science fair project idea explores substances that cause a bubble to last longer.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Study emulsifiers and learn how they are used in food science, medicine, soaps and cosmetics. Identify which materials are created using an emulsifier.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

This experiment will explore whether adding different substances to a gel affects its strength.

This middle school science fair project determines whether DNA is most easily extracted from under-ripe, ripe, or over-ripe strawberries.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.