1) Differentiation is a teaching approach that responds to learner needs by providing different avenues for content, process, and product based on students' readiness, interests, and learning profiles.
2) Differentiation involves using flexible grouping, tiered assignments, and varied activities to engage students in content at their level. Teachers assess students and provide appropriately challenging material for each.
3) When differentiating, teachers consider content (what students learn), process (how students make sense of content), and product (how students demonstrate learning). They vary lessons based on individual student characteristics like readiness, interests, and learning styles.