Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

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

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.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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

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

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

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

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.

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

This science fair project idea investigates whether plants can survive being frozen.

In this science fair project, students use the streak test to tell minerals apart from each other.

This science fair project idea investigates how magnetism can defy the force of gravity.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

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

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

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

Discover whether cold or hot water from the faucet will boil faster on the stove.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Find out whether packaged seeds actually do expire in this new science fair project idea.