The ability to leave timestamp comments in text or video.

Vivo la capacidad de hacer marcadores para que toda mi clase los use y marque con tiempo mis comentarios.

I used GoReact for my performance-based piano classes. I loved the feature that gave uploaded videos different levels of privacy, letting as few or as many people be able to view and comment, based on pedagogical goals. Another fantastic feature of the program is being able to make annotations to video via many modes (text, audio, video, file attachment, etc.)--this is great for teaching because it allows students to express themselves in many different ways and puts technology center in the mind of users. Though I didn't use it during my trial, I think the test function is excellent as well, giving students a limited number of tries to make a successful video.