Learning language

It is highly valuable to expand on what learner's know.  How do you determine what words learners already know?

big subject

This school of thought is that fluency counts most in language mastery and vocabulary is the most important part of fluency.  For example, even if the learner's pronunciation is poor if he strings together a full meaningful sentence a native is likely to understand and the learner will get the face time so vital to learning.

one overall strategy