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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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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 examines the physical characteristics of soil in order to learn about soil permeability and other environmental properties.
Fifth Grade
Sixth 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
This science fair project challenges students to research and interact with the animals and plants that live in tide pools and test a practical use of tidepools
Middle School
High School
This science fair project idea teaches kids the different functions of a leaf.
Elementary School
Botany
Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.
Seventh Grade
Medium
Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.
Eighth Grade
Medium
This science fair project idea raises awareness of a real ecological issue.
Middle School
Medium
Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?
Seventh Grade
Eighth Grade

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