This document contains vocabulary words, definitions and essential questions covering expressions and equations. I have a board in my room titled: "What We're Learning" and I post the vocabulary and essential questions that go with the lesson for the day. I use the essential questions as exit tickets and also as a review at the end of the unit. I present my students with an essential question from the unit and they answer on whiteboards. After each lesson, I hang the essential questions on a clothes line across the room. Throughout the year the essential questions serve as a review. The students will be asked to pick a question off the clothes line and answer the question.