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Science Buddies

Freemium#12 of 30 in Teacher Resource Libraries

Science Buddies: A deep, free STEM resource library for K-12 projects, lessons, and science fairs. Ranked #12 of 30 in Teacher Resource Libraries by our editors (8.2/10); pricing: Free plan; best for free K-12 science and STEM project resources.

8.2/10Editor score

Try Science Buddies

Science Buddies8.2 Try Science Buddies

At a glance

Editor score
8.2 / 10
Pricing
Free plan
Best for
Free K-12 science and STEM project resources
Free plan
Yes
Founded
2001
Facts checked
20 Sep 2026

Where it wins
- More than 1,200 free K-12 science projects
- NGSS lessons, worksheets, rubrics, and teacher guides
- Science-fair planning tools plus AI formative feedback
Where it doesn't
- Focused on STEM rather than all teaching subjects
- Available through the web platform only
- One career-discovery classroom tool requires a paid subscription

Our verdict on Science Buddies

Science Buddies is a web-based resource library for K-12 science and engineering education. It serves classroom teachers, students, parents, and informal educators with project ideas, lesson plans, teacher guides, student worksheets, videos, quizzes, rubrics, and downloadable PDF and Word files. Coverage spans astronomy, biology, chemistry, earth and environmental science, engineering, physics, mathematics, and computer science, making it a strong fit for STEM-focused instruction and project-based learning.

Its free collection is the main draw. The searchable library includes more than 1,200 K-12 science projects, alongside NGSS-aligned classroom lesson plans and guides for the Scientific Method and Engineering Design. Teachers can also find science-fair planning schedules, judging scorecards, rubrics, interactive STEM activities, and video lessons. The Topic Selection Wizard helps recommend project ideas, while Science Project Pathways adds AI-powered formative feedback. Together, these tools support activity selection, project planning, instruction, and assessment without requiring a broad general teaching platform.

Science Buddies is most suitable for educators who want concentrated STEM materials and practical support for science fairs or classroom investigations. Its subject focus is also its main boundary: teachers seeking resources across language arts, social studies, or general classroom management will need a broader library. The platform is web-based, and its ecosystem fit is limited by the unavailability of Google Classroom and Ask an Expert features. Science Buddies states that its resources are free and open to everyone, although classroom use of one career-discovery tool requires a paid subscription. Choose it for accessible K-12 STEM depth; look elsewhere for wider subject coverage or a more connected classroom platform.

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Science Buddies pricing

Plans Free planFreemium A usable free plan; paid tiers unlock the limits above. Prices checked 20 Sep 2026.

See plans on sciencebuddies.org

Science Buddies fact sheet

Free plan	Yes
Paid from	Not verified
Resource formats	lesson plans, teacher guides, student worksheets, PDF files, Word documents, videos, quizzes, rubrics
Grade levels	K-12
Subject coverage	STEM, astronomy, biology, chemistry, earth and environmental science, engineering, physics, mathematics, computer science
Editable files	Not verified
School licensing	Not verified
Access model	Mixed
Deployment	Cloud
Platforms	Web
Support	Email, Docs
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan
Website	sciencebuddies.org
Facts checked	20 Sep 2026

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Featured on iTechGuides

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update