Why quizzes are not included in organic chemistry?

Why quizzes are not included in organic chemistry? It would be better to add quizzes to the organic chemistry section as well.

1. Közösség
2. Content Requests and Feedback

Thanks

Thanks a lot Sal Khan!This site has changed my perspective towards learning.This website is amazing.It has helped me a lot with chemistry and biology.Chemistry videos are the only way I'm learning ...

1. Közösség
2. Positive Stories and Testimonials