1 Biologya branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws:the mathematical sciences. 2  Biologysystematic knowledge of the physical or material world gained through observation and experimentation.
Bracha Alpert has identified three different patterns of classroom discourse: (1) silent (the teacher talks almost all the time and asks only an occasional question),(2) controlled (as in the excerpt above), and (3) active (the teacher facilitates while the students talk primarily to each other).
Examples of discourse markers in English. (Note that discourse markers come from more than one word class .). Definition: A particle (such as oh, like, and you know) that is used to direct or redirect the flow of conversation without adding any significant paraphrasable meaning to the discourse. Also called pragmatic marker.