[LisaValencia]

I found this on Amazon. Would this be what I need? They also had a resource book but I would think that this one would be the one with the lesson plans.
Interchange Teacher's Edition 1 (Interchange Third Edition)

Also, will I need to buy the student's book, too? I am not able to buy workbooks to give to each student, I was hoping to find things I could photocopy in the teacher's book and just have them take notes and give handouts.

I am not teaching at a school, I am doing it on my own in Costa Rica and the pay is very low.

I am in the States now, almost finished with an online TEFL course and preparing to go back to Costa Rica in a month. I taught there for three months with no educational background. I am now attempting to better prepare myself to teach again. Any advise would be appreciated.