What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Get a cool middle school chemistry project idea on how to determine whether a physical or a chemical change has taken place.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

Determine whether the application of Febreeze will lower the bacterial count.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

People have favorite flavors, but what about ants? Which ant food is the most popular?

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

This science fair project idea raises awareness of a real ecological issue.

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

Check out this cool science fair project on identifying rocks and minerals for kids.

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

Learn the chemistry and physics of the brain, how our nervous system work. Demonstrate that the brain is an electrical and chemical machine.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

This science fair project idea identifies and understands adaptations in birds.

The goal of this science fair project is to identify the galactic center of the milky way using globular clusters, as found through Google Earth.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

This middle school project examines the strength of horizontal versus vertical pointing eggshells.