Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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

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.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

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

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Find out whether putting something on top of a plant will inhibit its growth.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

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.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

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

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Find out whether matte or shiny nail polish lasts longer.

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

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.