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

Use pepper and soap to discover some fun facts about the properties of water.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

This science fair project idea experiments with spinning color wheels and optical illusions.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

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

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.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

High school students recreate Michael Faraday's experiment in this cool science fair project that induces current in a coil of wire.

This science fair project collects information on the Internet about yourself and others.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

Discover how and which salt melts ice the quickest.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.