What is ‘longitudinal coherence’? Liping Ma (2010) describes longitudinal coherence as a teacher’s extensive knowledge of the whole mathematical curriculum and they are able to draw on this to inform their practice. Teaching with longitudinal coherence builds a “conceptual understanding” that connects “new ideas to existing knowledge” that will “build ideas across time” (Krajcik et al., … Continue reading Longitudinal Coherence and the ‘Concept Knot’