What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

The purpose of this science fair project is to build a basic radio.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

This project determines what category of person is most likely to be ticklish.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Cleaning can be a chore, but not with this sudsy experiment!

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

This science fair project idea investigates the difference in reaction times between boys and girls.

This project examines what types of objects burn and which burn faster and cleaner.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this science fair project you will make a model of a cell membrane using very simple material.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?