I find it interesting that many teachers feel like they must know the content they want their students to learn before they teach it. And yet, they are unwilling to use for themselves the tools they want their students to use in the classroom before they use them with students.
It’s ok if you don’t know all the content. That’s not possible in the world in which we live anyway. Discover along with students.
It’s ok if you’re not the complete master of tool before you give it to a student. But your students’ experience will be all the richer if you also have been a student of the tool.
I don’t want to make the separation between content and tool too neat. I hope teachers are guides and students of both.