What makes an expert teacher? Investigating teachers’ professional vision and discourse abilities.

Remember those teachers at school who could not get ahold of the class: everyone was chatting, doing whatever, but definitely not learning. And then there were those teachers to whom everyone almost effortlessly paid attention. These teachers excelled by conveying the subject-matter in an engaging and comprehensible manner, by adequately assessing students' thinking during learning and adaptively responding to the students learning needs.

Effective teachers show superior performance with regard to core-practices of teaching, such as classroom management, provision of instructional explanations, and formative assessment.