[Dr. Jamshid Ibrahim]

Grammar is the result of observation. When speaking a language people make observations. Grammar is not an objective in itself (unless for philosophical or intellectual exercise) but a help to understand language retrospectively. So don't teach grammar but let your students find out themselves through observation. Once I wrote down some nouns that take the indefinite article "an" and some that take "a" and asked my students to find out why. Students can make their own grammar through observation.

Native speaker's situation is different. They are exposed to language nonstop in different situations whereas those who learn English as a second language don't have that duration of exposure nor a natural environment for learning the language. We would better call it: Grammar and Observation