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.

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

This science fair project idea compares the mass and density of objects.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

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

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

Make your own greenhouse - out of a balloon! Your child will learn how greenhouses work as they plant radish seeds and watch them grow.

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

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

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.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

Kids are sure to be entranced by the magic of the ocean when they create their very own ocean in a bottle.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

Make a spring collage with your child to get them outside and those creative juices flowing!

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

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.

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

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

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

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Challenge your learner to design and build a city of their own in this creative engineering activity.