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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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Showing 31 to 45 of 700
In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.
Botany
Fourth Grade
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
Weather and Climate
Fourth Grade
This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.
Botany
Third Grade
This science fair project examines how seeds hitchhike on animals and clothing.
Botany
Elementary School
Are there really specific taste areas of the tongue for sweet, salty, bitter, sour, and umami? Find out for yourself in this cool science project.
Anatomy
Fourth Grade
Little ones looking to get their hands dirty will love this series of fun plant experiments for kids that teach essential plant biology concepts such as photosynthesis, transpiration, capillary action, and tropisms in fun and hands-on ways. Little green thumbs get to do everything from literally cloning cabbage (which is actually quite easy to do, and very cool) to building their own working greenhouses. Check it out!
Botany
Science Fair Project Ideas
Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!
Zoology
Fourth Grade
How does frost form?  How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.
Weather and Climate
Third Grade
This science experiment tests if dog saliva can really help heal wounds.
Microbiology
Elementary School
Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!
Botany
Fourth Grade
What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.
Anatomy
Third Grade

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