ninjanerd.org的 10 大竞争对手

osmosis.org

the all-in-one health education platform where educators teach effectively and students learn efficiently.

app.sketchy.com

learning made unforgettable

quizlet.com

quizlet makes simple learning tools that let you study anything. start learning today with flashcards, games and learning tools — all for free.

nsta.org

Join 40,000 dedicated teachers, science supervisors, administrators, informal educators, scientists, and business and industry representatives committed to science education.

openpediatrics.org

Find answers to your questions here: General OPENPediatrics Questions / Continuing Education Questions / Other Content Questions / Technical Questions. See more

askabiologist.asu.edu

Have a Question About Biologists or Biology?This may be the place for you. Over the years, Ask A Biologist has received many questions about what it's like to be a biologist, ways to get into biology, and other more specific questions about becoming a biologist.Below, we've listed some of the most common or interesting questions. Make sure to check back every once in a while, as we will continue to add to this list.