This science fair project idea produces varying pitches of sound.

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

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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 plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

An home science experiment for older students that teaches about the science behind heat.

In this experiment you will replicate the mummification process by making a hot dog mummy.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

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

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

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

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Learn all about balance and motion as your child designs a corn maze!