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.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

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.”

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

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

How do organic materials become soil? This science experiment measures what materials biodegrade.

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

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

This experiment tests which gender is better at catching how a magician performs his tricks.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

Find out whether matte or shiny nail polish lasts longer.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

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.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project idea identifies trees using a dichotomous key.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

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

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

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

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

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