Soliek: That is obviously correct. Where else would I have ever (knowingly, at least) seen anything written by you? If you’d be willing to share, I’d be happy to comment. However, why anyone would care about my comments without knowing who I am, is totally beyond me.
My point was not challenging your knowledge of the material. You said in the beginning that you were confident about both your knowledge, and your ability to convey it. I conceded that in my orginal response. Your concern was convincing your students that it matters. To that I say, if you know, you can teach. But you cannot preach, and have devarim nichnasim el halev, unless they are yotzim min halev. If it would really be in your lev, then it would come out in every format.
I’m not talking about typos. We’re all human, and we all make mistakes. I don’t believe in becoming the grammar police either; I’ll leave that for Haifagirl. (Haven’t heard from her much lately!) But whatever you teach, if you want your students to value the subject, you must as well. If you just want them to learn rules of the road, then if you know them you can convey them. But if you want to teach value, then value it yourself.