Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

What happens when colored beams of light mix? You might be surprised.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This easy at-home experiment is a great way to "see" science.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science fair project idea investigates the difference in reaction times between boys and girls.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

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

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This science fair project idea explores whether color affects a person's emotional state.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

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

In this project students experiment with making music using only glasses of water.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.