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Science Fair Project Ideas

Browse our selection of over 1,200 free science projects for K-12. At Science Buddies our team of scientists work tirelessly to design and test a wide selection of fun hands-on science projects and activities so all students have access to quality STEM resources. Browse by subject, grade level, or try our Topic Selection Wizard to find your winning science project. With science projects in 32 different areas of science from astronomy to zoology, we’ve got something for everyone!

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Topic Selection Wizard
Use the Topic Selection Wizard tool:
  • Answer a short questionnaire about your interests & hobbies
  • It uses your responses to recommend science projects you will enjoy
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Browse Science Projects by Topic

Listed below are all of the different areas of science where we offer Science Projects. Click on any area to see a full list of related Science Projects.

Physical Science

Earth & Environmental Science

Life Science

Behavioral & Social Science

Math & Computer Science

Engineering

Special Collections

Search the Science Projects Library

Science Buddies has over 1,200 Science Projects in over 30 areas of science. Search our database of science projects for anything you may be looking for.

Browse Science Projects by Grade Level

Elementary School Science Projects

Middle School Science Projects

High School Science Projects

Search the Science Projects Library

Science Buddies has over 1,200 Science Projects in over 30 areas of science. Search our database of science projects for anything you may be looking for.