Contingency, Deviation from Agenda
Descriptors / aspects of DA
Good examples:
When the teacher displays deeper subject matter knowledge to enhance pupils’ understanding
When the teacher displays deeper subject matter knowledge in taking a pupil’s remark as a starting point for deeper enquiry
Spending time in questioning /probing pupils in order to find out why a pupil comes up with a wrong answer
Deviation characterized by conceptual focus
Presentation of the concept in a new way
Illuminating with an everyday example
Bad examples:
Letting a pupil hijack the lesson which may result in less mathematical focus
When the DA is “privatized” – the lesson is deviated in direction of only one (or a few) pupil(s)
Only repeating previous lesson content
Displaying mathematical uncertainty