I am not certain I understand what you are asking. Chapter 2 seems to be all about the student needs being the moving force for differentiation. A responsive teacher knows her student's needs and makes sure they are being met through challenge, affirmation, contribution, power and purpose. I'm not sure what other idea makes differentiation more specific. Reading these chapters has not added anything to my desire to be responsive, because I already believe a teacher shouldn't be any other way. That is why I want to teach-to influence INDIVIDUAL lives. I am a product of a one size fits all education. These chapters are just showing me what it looks like in the classroom-a task which seems too overwhelming to have a grasp of. That is why I liked the quote so much from the reading that I shared previously. I would love for you to share examples of what you are looking for.