For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Learn how to use the Punnett Square to predict the gene combinations of dominant and recessive traits in this fun and easy genetics science project!

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

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

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

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 learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Science fair project in which you will create your electricity by making a homemade battery using salt water, a nail, and a copper wire.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Scavenger Hunt! Check out this fun science fair project idea to explore the difference between opaque, translucent, and transparent objects around your house.

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

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

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

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

Looking for a fun project on energy? Check out this fun elementary school science fair project idea that demonstrates chemical energy in a bottle.