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!

Create a bee garden to help shelter bees in your area.

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

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!

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

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.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this experiment we will be determining whether birds prefer certain colors of seed.

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.

Help your child plant a "tea garden": a garden made of herbs for making teas.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

This science fair project investigates why the number of visible stars changes from place to place.

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

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.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

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

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.

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