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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 107
Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.
Middle School
Botany
Learn how to test for the production of carbon dioxide by respiration in plants with this science fair project.
Middle School
High School
Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.
Seventh Grade
Eighth Grade
Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?
Seventh Grade
Eighth Grade
This science fair project will help students learn about non-vascular plants, such as mosses.
Second Grade
Third Grade
Science fair project that examines the physical characteristics of soil in order to learn about soil permeability and other environmental properties.
Fifth Grade
Sixth Grade
Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.
Ninth Grade
Tenth Grade
Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.
Fifth Grade
Sixth Grade
In this science fair project, students determine whether a bean plant grows faster and taller using a traditional soil planting method or hydroponic method.
Middle School
Life Science
Science fair project which compares the quantity of cells in the different phases of mitosis by observing the cells of an onion root tip.
Ninth Grade
Tenth Grade
In this science fair project, learn about transpiration, the process by which plants lose water from their leaves by evaporation.
Middle School
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