Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

Test whether spot magnets can help improve the symptoms of an injury.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This experiment will investigate whether reward or punishment is more apt to motivate people.

Start your toy engines -- this is going to be a fast and friction-filled race!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

In this design challenge, your child will make a bottle rocket using typical household items.

Use a dichotomous key to identify plants or animals.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

Word color association is just a fancy way to talk about the way we connect colors with words.

Explore concepts in current and coltage with these Van de Graaff generator experiments.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.