Teach to class or to individuals
Some instructors teach to the class, so when a problem is noticed with one student, the whole class is reminded to check themselves for the same problem. Other instructors concentrate on individual students, spending time pointing out specific problems to each one. Instructors who teach to individuals tend to spend more time with students with problems and neglect the needs of the whole class. When instructors teach to the whole class, sometimes individual students with problems tend to get left behind.