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

This science experiment tests if dog saliva can really help heal wounds.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

This science fair project idea examines the reason boats are shaped and engineered.

In this experiment we will be determining whether birds prefer certain colors of seed.

The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Do different types of oil mix or stack? Find out in this science fair project idea!

This project examines whether people's taste perception is influenced by what they see.

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

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this experiment, the weight of aluminum cans will be compared.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Explore if planting seeds in a certain direction will affect how fast it germinates.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.