This science fair project idea researches the effects of acid rain on plant growth.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

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

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Discover which fabrics shrink the most in the wash and why.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

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

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

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.

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

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

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

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!

This science fair project will help students learn about non-vascular plants, such as mosses.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

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.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.