Science – 40+ UNIQUE Free Educational Websites (Grades K–12)
1. Khan Academy Science
URL: https://www.khanacademy.org/science
Provides free science courses covering biology, chemistry, physics, and earth science. Lessons include videos, quizzes, and practice exercises. Suitable for middle and high school learners.
2. CK-12 Science
URL: https://www.ck12.org/science/
Offers free digital textbooks, simulations, and practice for K–12 science subjects. Content is customizable and aligned with school curricula. Completely open-access.
3. National Geographic Education
URL: https://education.nationalgeographic.org
Provides free lesson plans, videos, and interactive resources focused on science, geography, and the environment. Highly engaging and visually rich. Suitable for all grade levels.
4. NASA STEM
URL: https://www.nasa.gov/stem
Offers free science and space-related educational materials from NASA. Includes activities, videos, and real-world science applications. Ideal for inspiring curiosity in students.
5. BBC Bitesize Science
URL: https://www.bbc.co.uk/bitesize/subjects/zng4d2p
Provides free science lessons, videos, and quizzes aligned to school curricula. Covers biology, chemistry, and physics. Excellent for revision and concept clarity.
6. Smithsonian Science Education
URL: https://learninglab.si.edu
Provides access to thousands of free science resources, primary sources, and interactive collections. Encourages inquiry-based learning. Suitable for all grades.
7. PhET Interactive Simulations
URL: https://phet.colorado.edu
Offers free interactive science and math simulations developed by the University of Colorado. Helps students visualize complex scientific concepts. Widely used worldwide.
8. Science Buddies
URL: https://www.sciencebuddies.org
Provides free science fair project ideas, experiments, and explanations. Covers a wide range of scientific fields. Ideal for hands-on learning.
9. Exploratorium
URL: https://www.exploratorium.edu
Offers free science activities, experiments, and explanations. Focuses on inquiry-based, hands-on learning. Suitable for all ages.
10. BioInteractive
URL: https://www.biointeractive.org
Provides free biology resources developed by HHMI. Includes videos, simulations, and data sets. Best for middle and high school biology.
11. ChemCollective
URL: http://chemcollective.org
Offers free virtual chemistry labs and tutorials. Helps students practice chemistry concepts safely. Ideal for high school learners.
12. Physics Classroom
URL: https://www.physicsclassroom.com
Provides free tutorials, simulations, and practice for physics concepts. Content is clear and student-friendly. Suitable for high school students.
13. Earth Science Online
URL: https://www.earthscienceonline.com
Offers free resources on geology, meteorology, and earth systems. Designed for secondary school students. Clear explanations with visuals.
14. SciShow Kids
URL: https://www.youtube.com/@SciShowKids
Provides free science videos explaining concepts in a kid-friendly way. Covers biology, physics, and earth science topics. Suitable for elementary learners.
15. Mystery Science
URL: https://mysteryscience.com
Offers free science lessons and experiments for elementary grades. Encourages curiosity and inquiry-based learning. Engaging and easy to follow.
16. OpenSciEd
URL: https://www.openscied.org
Provides free, research-based science curricula. Focuses on real-world problem solving. Suitable for K–12 classrooms.
17. NASA Climate Kids
URL: https://climatekids.nasa.gov
Explains climate science in a student-friendly way. Includes games, videos, and articles. Ideal for grades K–8.
18. Cells Alive
URL: https://www.cellsalive.com
Provides interactive cell biology visuals and explanations. Helps students understand microscopic life. Best for middle and high school.
19. Annenberg Learner Science
URL: https://www.learner.org/subjects/science/
Offers free video-based science courses. Covers biology, chemistry, physics, and earth science. Teacher- and student-friendly.
20. Science Learning Hub
URL: https://www.sciencelearn.org.nz
A New Zealand-based platform offering free science resources. Focuses on real-world science contexts. Suitable for K–12.
21. Royal Society of Chemistry Education
URL: https://edu.rsc.org
Provides free chemistry teaching resources and experiments. Developed by experts. Ideal for secondary education.
22. American Museum of Natural History Education
URL: https://www.amnh.org/learn-teach
Offers free science lessons, videos, and virtual field trips. Covers earth science, biology, and space. Engaging and informative.
23. NOAA Education
URL: https://www.noaa.gov/education
Provides free resources on weather, oceans, and climate science. Includes lesson plans and data tools. Suitable for all grades.
24. SciJinks
URL: https://scijinks.gov
Explains weather and climate concepts in simple language. Created by NOAA. Fun and informative for younger learners.
25. Energy Kids
URL: https://www.eia.gov/kids
Offers free energy education resources. Explains energy concepts clearly. Suitable for elementary and middle school.
26. Biology Online
URL: https://www.biologyonline.com
Provides free biology tutorials and articles. Covers core life science topics. Suitable for secondary students.
27. TeachEngineering
URL: https://www.teachengineering.org
Offers free STEM lesson plans and activities. Integrates science with engineering concepts. Suitable for K–12.
28. OpenLearn Science
URL: https://www.open.edu/openlearn/science
Provides free science courses from The Open University. Covers various science disciplines. Suitable for older students.
29. Science Kids
URL: https://www.sciencekids.co.nz
Offers free science facts, experiments, and quizzes. Designed to make science fun. Ideal for younger learners.
30. EdHeads
URL: https://edheads.org
Provides interactive science simulations and games. Covers anatomy, weather, and engineering. Engaging and educational.
31. Kids Discover Online
URL: https://kidsdiscover.com
Offers free science and history articles for kids. Engaging visuals and explanations. Suitable for elementary grades.
32. BrainPOP Science
URL: https://www.brainpop.com/science/
Provides free sample science videos and quizzes. Explains concepts clearly with animation. Suitable for K–12.
33. Planet Science
URL: https://www.planet-science.com
Offers free science articles and experiments. Focuses on chemistry and physics. Useful for enrichment.
34. STEM Learning UK
URL: https://www.stem.org.uk
Provides free STEM teaching resources. Covers science and technology topics. Suitable for K–12 educators and learners.
35. e-Learning for Kids Science
URL: https://www.e-learningforkids.org/subjects/science/
Offers free online science lessons for children. Covers basic science topics interactively. Ideal for elementary grades.
36. Science NetLinks
URL: https://www.sciencenetlinks.com
Provides free science lesson plans and resources. Developed by AAAS. Supports inquiry-based learning.
37. Cosmos for Kids
URL: https://www.cosmosforkids.com
Explains astronomy and space science in simple terms. Includes visuals and activities. Ideal for elementary learners.
38. Zooniverse
URL: https://www.zooniverse.org
Allows students to participate in real scientific research projects. Covers biology, space, and climate science. Free and engaging.
39. Microbiology Online
URL: https://microbiologyonline.org
Provides free microbiology resources. Includes tutorials and images. Suitable for advanced high school students.
40. Science World
URL: https://scienceworld.ca
Offers free science demonstrations and explanations. Focuses on hands-on learning. Suitable for all ages.
41. STEMettes Resources
URL: https://stemettes.org/resources
Provides free STEM learning resources. Encourages diversity in science learning. Suitable for school students.
42. Physics Central
URL: https://www.physicscentral.com
Provides free physics articles and experiments. Developed by the American Physical Society. Suitable for high school.
43. Science Friday Education
URL: https://www.sciencefriday.com/educational-resources/
Offers free science podcasts and classroom resources. Explains current science topics. Engaging for older students.
44. Open Culture Science
URL: https://www.openculture.com/science_free_courses
Curates free science courses and materials. Includes videos and readings. Useful for enrichment.
45. Learn.Genetics
URL: https://learn.genetics.utah.edu
Provides free interactive genetics lessons. Developed by the University of Utah. Suitable for middle and high school.
46. Science Journal for Kids
URL: https://www.sciencejournalforkids.org
Presents real scientific research adapted for students. Encourages critical thinking. Suitable for grades 4–12.