I think too that students fear asking questions because they don't want to appear "stupid". In reality other students have the same questions. This is my very first Toot bu the way...
@pandian Many teachers do not instil understanding, only learning facts. Their students cannot reason and take themselves forward and enjoy it.
@peterdrake I think the challenge is to create a non-judgmental environment. Unfortunately in the world of social media and normal human nature, that is easier said than done.