Annette, a native speaker of spanish, attends a class that is taught by ms. perez, who is fluent in both english and spanish. the class is taught using some of each language, but relying on spanish to explain complex ideas. annette is learning through which approach

The critical is to have dialect educating mastery. Because somebody is familiar or a first language speaker of the dialect being instructed does not imply that they can show it. 
Expecting that the educator is prepared in dialect showing I imagine that it isn't basic for amateurs if the instructor is native language or conversant in the dialect being instructed yet for cutting-edge understudies, this could help.