Hi @schjen ,

As @chriscas mentioned, student copies will not update once sent out. If you embed a Google file in the Rich Content Editor, it WILL reflect changes you make to the original. But copies sent out to students become distinct, separate documents.

There is an app (not free) that has the ability to do what you are asking. It's called Kami, and it integrates really nicely with Canvas.

How to use Kami's Push Changes feature in Canvas

Kami also has templates for interactive notebooks and many other features. It might be worth checking out if you do a lot of interactive assignments.