The success of new curriculum and assessment initiatives hinges upon teachers' assessment literacy and conceptions of assessment. However, research has shown that many teachers lack assessment literacy due to inadequate assessment preparation in preservice teacher education. Many preservice teachers' reportedly tend to acquire their knowledge of…

This study describes how a secondary school teacher in Trinidad and Tobago implemented opportunities for reasoning and proof in Geometry. Data were collected via teaching observations, teacher interviews, audio, and video recording. The analysis of the data suggested that the teacher used open-ended questioning, revoicing, group work, and…