Khan Academy

Representing structures of organic molecules using line (or line-angle) diagrams.  Created by Sal Khan.

B.C. Open Collection

The B.C. Open Collection is a curated selection of open educational resources (OER) that can be accessed by educators in B.C. and beyond to use in the classroom, in an institutional learning management system, or on other teaching and learning platforms. All materials are openly licensed. This means they are free to use, customize, and share.The collection includes courses and textbooks, and new resources are being added all the time.