Teacher-student interactions include (a) active student participation (increasing opportunities for students to respond and receive feedback); (b) unison responding (increasing students' responding by having them chorally respond); (c) signals (providing a cue to evoke unison oral responses); (d) pacing (promoting active student engagement with brisk teacher pacing); (e) teaching to mastery (ensuring firm responding over time); (f) error corrections (minimizing student errors by carefully sequencing instruction; when errors do occur, using careful error correction procedures—model, lead, test, retest); and (g) motivation (enhancing motivation through high levels of student success).