This document provides instruction for a lesson on writing IELTS task 2 problems and solutions essays. It gives an example essay prompt about problems caused by overcrowding in urban areas and ways governments can address these issues. The document outlines the structure and organization students should follow in their response, including introducing the topic, identifying two problems and examples, suggesting solutions, and summarizing. It also provides vocabulary for students to use when discussing overcrowding, measures, changes, and responsibility. The goal is to help students understand how to answer IELTS task 2 style questions in a clear and organized manner using academic language.