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Resources

Free books, simulations, tools and reference sheets, chosen and shared by teachers and learners. Pick a subject and a level to see what is there.

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NCERT textbooks: Science and Biology

The official school textbooks, free to read and download. Look for the Science book of your class, or the Biology book for classes 11 and 12.

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Khan Academy: Biology

Free videos and articles on cells, genetics, evolution and ecology. A good second explanation for any lesson.

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Biology 2e (OpenStax)

A complete free biology textbook, from cells to ecosystems, with figures and review questions. Free to read online, from OpenStax at Rice University, licensed under CC BY 4.0.

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