Certainly, but could you give me a bit of background- where are these learners from and where are they living? Are they living in an English-speaking setting? If so, then it is important for them to use things that native speakers use. Many learners arrive in the US or UK and find that the language they learnt is very different from what they hear. Some teachers insist on full answers to questions and frown on monosyllabic yes/no answers, but thiws is what many of us use. Also, this doesn't enable them to learn the different ways we can say 'yes', so they might not understand a tentative 'yeees', or see the difference between a firm 'yes' and an ironic one. This is less important where they don't have daily contact with English, hence my questions. With taking responsibility for learning, it is a case of the old adage about teaching a person to fish rather than giving them food. It is worth spending time with them teaching them how to use a ditionary properly, so that they have the research skills to find things out themselves, and there are good dictionaries that could be used at that age, like Oxford Wordpower. It's also worth teaching them the questions they could ask to get help, so that they can ask for repetition, clarification, etc, confidently, rather than saying 'what mean xxx' and other such questions.
