English instruction is more efficient when teachers use a digitized medium. Digitalization increases student-centeredness . If a student writes a digitized document and gives it to you to correct, you can add notes to the document just as you can to a regular paper document. Connected to this is a grammar chat room with students and tutors who discuss and answer questions about grammar. The student learns what he needs to know when he needs to know it.
Digitalization increases accessiblity.
Particularly in English for Specific Purposes, and more particularly in non-English speaking countries, specific material in English is fairly hard to come by. For instance, let us say you are teaching English at a company here in Berlin which produces flags. They need to learn vocabulary which has to do with flag production. You will get a number of web sites of English-speaking flag production companies with information on their products. Print these out and use them in your class.