This document discusses self-pacing in the classroom and defines some key terms: - Self-pacing allows students to move through course content at their own pace, which has pros like allowing overachievers and underachievers to progress appropriately but cons like discouraging collaboration. - Semi-self pacing balances self-pacing with some class-wide activities like lectures, group work and tests, to maintain a sense of unity. - Keeping students on the same unit involves using "speed bumps" like increased rigor assignments or projects to pace different learners. The teacher has learned that self-pacing requires more grading, engaging materials, and monitoring of student progress.