Lessons in Clarity

Whenever I'm in the classroom, my teacher is always teaching a lesson! So I've been able to observe my teracher's clarity. I've noticed that she does pay attention to the level that each student is at, and makes sure she isn't putting them at too high of a level. In my class there are a lot of different levels of students. There are a couple of very smart kids, and then there are a couple that are really behind in reading or math, and my teacher makes sure not to give those couple of students too advanced of books or math timed-tests.
One thing I think my teacher isn't very clear on is giving directions. The students always seem to be lost or confused. She tells them what they're doing, but it doesn't seem to be enough for these kids. I'm not sure if it's because they're only third graders, and they don't know how to listen yet, or if she need to finds a new way of giving directions...