What are some textbook dos and don'ts?

I've recently been invited to write sections of a human geography electronic textbook for high school.

What are some things you like/hate finding in a textbook?

I'd especially appreciate input on tone, structure, kinds of content, "extras" and similar aspects.

Thanks!

Submitted April 21, 2020 at 11:28AM by teacherisaac https://ift.tt/3btBDUV