1) I find every six princlpes are useful but it will be difficult to interpret the signaling principle when I suppose that I teach Indonesian language, probably because the language is not yet well organized to teach. I mean even every language doesn’t stop its develpment, but Indonesian language is still on the developing process rather than other major languages.

      2) Modality principle might not work well because they’d prefer to check whether the sound they hear and the verbal information that they read is same, especially for the beginners.