Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

This science fair project idea provides evidence that air is everywhere and takes up space.

In this design challenge, your child will make a bottle rocket using typical household items.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

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.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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.

Challenge your learner to design and build a city of their own in this creative engineering activity.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

In this activity your child will create their very own marble maze!

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

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