In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

In this fun activity, your child will create their very own solar oven to bake s'mores!

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

This science fair project idea demonstrates the process of land erosion.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

This science fair project idea explores the different properties of matter.

This project explores whether music affects the growth and health of plants.

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

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.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

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?

Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

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

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Start your toy engines -- this is going to be a fast and friction-filled race!