What Do You Want to See in Books?

When i visit lots of schools there's always different policies knocking around for what are stopping in books right so some schools it's got to be less than objective written out title date all this kind of thing now whenever i talk about using tools of mass participation like mini whiteboards or ABC cards one of the kickbacks i often get is well we can't do that because slt want to see evidence in books. If they if they look through a book and they saw today the only thing written down is like a worked example but everything else has been done on mini whiteboard or discussion so it'd be it'd be a problem. So where do you stand on that in terms of kind of what