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Biology textbooks can cost a small fortune. We're talking as much as $7,500 for Biology textbooks for one class! That's why we recommend open educational resources like Flexbooks from CK-12.
Flexbooks are great for the classroom, for homeschooling and so much more. Not only are these books FREE, but they are also fully customizable. That means you can delete anything from the book that won't be taught and add any examples, pictures, videos or any other type of media you'd like. Use your creativity to write your own textbook just how you want it or use the books as they are. Many of these digital textbooks are already common core aligned and state standards aligned.
Now without further adieu, here are 5 great open source digital textbooks that you can use for biology.
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