Read Brown’s comment on language and culture:

As universal as kinesics communication is, there is tremendous variation cross-culturally and cross-linguistically in the specific interpretations of gestures. Human beings all move their heads, blink their eyes, move their arms and hands, but the significance of these movements varies from society to society.

(BROWN, H.Douglas. Principles of language learning and teaching. 5th ed. Longman, 2000. Adaptado)

A teacher concerned with the issues raised in the excerpt will