Student and lecturer

26 mins 19 secs

1 min 49 secs

10 mins 17 secs

9 mins 57 secs

7 mins 35 secs

13 mins 4 secs

11 mins 29 secs

8 mins 24 secs

7 mins 16 secs

4 mins 54 secs

8 mins 56 secs

5 mins 33 secs

10 mins 4 secs

10 mins 29 secs

10 mins 33 secs

11 mins 40 secs

6 mins 28 secs

10 mins 22 secs

7 mins 5 secs

15 mins 9 secs

11 mins 59 secs

12 mins 58 secs

1 min 25 secs

10 mins 36 secs

4 mins 58 secs

6 mins 45 secs

11 mins 53 secs

11 mins 22 secs

9 mins 17 secs

5 mins 57 secs

9 mins 59 secs

7 mins 50 secs

11 mins 38 secs

6 mins 24 secs

8 mins 45 secs

7 mins 10 secs

5 mins 7 secs

9 mins 44 secs

11 mins 59 secs

5 mins 53 secs