American Headway starter By John Soars and Liz Soars | تحریر
کتاب امریکن هدوی استارتر اثر جان سارز و لیز سارز
This textbook is excellent for intermediate German learners. The grammar is relatively advanced, but the book does a nice job of providing helpful descriptions/reviews and giving plenty of examples to practice. Answers are listed in the back so that students can check their own work. I also like that this book goes from very simple grammar (irregular verbs) to fairly advanced structures (passive constructions, indirect speech), so students can be reviewing and learning new material in the same book.