I'm a former Spanish teacher making the switch to teaching ESL for the first time. The school that has hired me doesn't have a textbook for their levels of ESL. I'd like to have something to follow to know how to teach the grammar especially since I have never taught it before. Can anyone recommend a good ESL textbook for adult learners? I prefer one with a communicative approach that has interactive activities for students. From what I have seen on amazon and other sites, there aren't many good textbooks out there. Or am I just missing them? Please respond if you can help! Thank you!