In this science fair project you will make a model of a cell membrane using very simple material.

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

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

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

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

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

In this project, a model of a submarine is built to simulate the buoyancy and displacement of water and air.

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

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

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!

This science fair project idea explores the egg's thin membrane.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

In this project, the affects of vitamin E are observed on a rose petal.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This science experiment tests if dog saliva can really help heal wounds.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

In this science fair project, students create their own miniature salt flats at home.

What combination of cloth and stain will be the easiest for removing stains? Test and experiment!

This science fair project teaches students about wilting and browning of salad greens.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Help your child learn about animal classification with this fun and delicious activity.

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

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.

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