The Writers at Work series prepares ESL students to tackle academic essay writing.The Teacher's Manual provides an introduction to the course. It contains teaching suggestions for each activity and a complete answer key.The Teacher's Manual provides an introduction to the course. It contains teaching suggestions for each activity and a complete answer key.The Writers at Work series prepares ESL students to tackle academic essay writing. The Teacher's Manual provides an introduction to the course. It contains teaching suggestions for each activity and a complete answer key.