In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project examines how seeds hitchhike on animals and clothing.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

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

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

Cleaning can be a chore, but not with this sudsy experiment!

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Science fair project that examines condensation and the conditions needed in order for dew to form.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Construct batteries that make electricity from fruits with this fun science fair project.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

This science fair project idea determines what household items are good conductors of electricity.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

This science fair project idea determines if the color of light affects the growth of plants.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair 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.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

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

Examine the effect of pressure on carbonation in soda.