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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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1,618 results
1,618 results
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Comparing Different Methods of Assessing Turbidity
Science project
Comparing Different Methods of Assessing Turbidity
The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.
Science
Science project
Counting Air Particulate Matter
Science project
Counting Air Particulate Matter
Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.
Science
Science project
Queenstown Creek: Land Use Vs. Water Quality
Science project
Queenstown Creek: Land Use Vs. Water Quality
This project researches whether the type of land use affects the water quality of Queenstown Creek.
Science
Science project
What Affects the Appearance of Afterimages?
Science project
What Affects the Appearance of Afterimages?
This project is about after-images and what possibly affects them.
Social studies
Science project
Light Intensity and Distance
Science project
Light Intensity and Distance
In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!
3rd grade
Science
Science project
Effect of Food On Mosquito Growth
Science project
Effect of Food On Mosquito Growth
This experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower
Science
Science project
Horseshoe Crab Density
Science project
Horseshoe Crab Density
This project studies how density maximizes the growth of juvenile limulus polyphemus (Horseshoe Crabs)
Science
Science project
Building a Wind Gauge
Science project
Building a Wind Gauge
How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.
Science
Science project
How to Make an Anemometer
Science project
How to Make an Anemometer
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
4th grade
Science
Science project
How Light Affects Plant Growth
Science project
How Light Affects Plant Growth
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
Science project
Germination: "The Birth of a Plant"
Science project
Germination: "The Birth of a Plant"
Science
Science project
Do Plants Start Off Better with Distilled Water, Miracle Gro or a Complete Nutrient?
Science project
Do Plants Start Off Better with Distilled Water, Miracle Gro or a Complete Nutrient?
Science
Science project
Do Gender and Age Affect Smiling?
Science project
Do Gender and Age Affect Smiling?
This science fair experiment examines the relationship between gender, age, and smiling.
Social studies
Science project
Diffusion, Membranes, and Cryogenics: Can We Freeze Cells?
Science project
Diffusion, Membranes, and Cryogenics: Can We Freeze Cells?
Can cells be frozen? This science fair project provides information to answer this question.
Science
Science project
Tides in the Chesapeake Bay
Science project
Tides in the Chesapeake Bay
Science
Science project
Windy Weather II: The Correlation Between Barometric Pressure and Wind Velocity
Science project
Windy Weather II: The Correlation Between Barometric Pressure and Wind Velocity
This science project researches the correlation between barometric pressure and wind velocity.
Science
Science project
Are Red Apples Sweeter Than Green Apples?
Science project
Are Red Apples Sweeter Than Green Apples?
Are red apples really sweeter than green apples? The objective of this science fair project is to test the theory with quantitative evidence.
Science
Science project
Virtual Fitness
Science project
Virtual Fitness
The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.
Science
Science project
Bleeding Paper
Science project
Bleeding Paper
The objective of this science fair project is to explore the relationship between acidic and basic compounds.
3rd grade
Science
Science project
Can superabsorbent polymer crystals absorb any other liquids besides water?
Science project
Can superabsorbent polymer crystals absorb any other liquids besides water?
This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?
4th grade
Science
Science project
Which of two superabsorbent polymers is the most absorbent?
Science project
Which of two superabsorbent polymers is the most absorbent?
The objective of this science fair project is to explore whether superabsorbent polymer or hyrdrogel crystals have the best waterabsorbency.
Science
Science project
Diaper Dissection
Science project
Diaper Dissection
The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.
4th grade
Science
Science project
Exploring the Rate of Plant Growth in Crystals vs. Soil
Science project
Exploring the Rate of Plant Growth in Crystals vs. Soil
The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.
5th grade
Science
Science project
Polymer Crystals vs. Ice
Science project
Polymer Crystals vs. Ice
What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!
3rd grade
Science
Science project
How Does Milk Freeze into Ice Cream?
Science project
How Does Milk Freeze into Ice Cream?
Learn how milk freezes into ice cream. Does the fat content affect how quickly the milk freezes? What is salt's role in the freezing process?
Science
Science project

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