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

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

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?

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

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?

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

In this science fair project, students use the streak test to tell minerals apart from each other.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science fair project teaches students the differences between fruits and vegetables.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

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

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

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

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Using a toy race car kids create a visual model of the Doppler Effect.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.