Graduated, your question is a versatile one. First of all, your friend �s students � readiness level that we can �t estimate or observe is very very important. Then, their interests, beliefs and your friend �s techniques, methods that she has found suitable for her students � learning needs are fundamental. As soon as these conditiones are associated to each other, your friend _ as a teacher_ will decide what to do. Otherwise, our suggestions will be only a "prescription".