13:41 The title says it all.

7:03 This teacher varies the instructional groupings during direct instruction. For example, she pauses for small group discussions or individual notes so that the lecture is not all teacher-led.

1:39 This teacher leads students in creating "Be sure to..." statements in order to communicate clear criteria, set goals for learning tasks, and involve students in committing to high-quality work.

2:05 The teacher uses probing questions when circulating to elicit evidence of student understanding. This video mostly supports quality of questions and probing student thought.