Constructivism is a theory of learning, not a theory of pedagogy. Neuroscience explains why this is important | npj Science of Learning Community
This is intended to be a controversial position, but it seems to align with research. We construct our understanding in context, building and elaborating schema over time. Our schema are only partial representations though. Learning is supported by creating multiple, overlapping partial representations of knowledge. Repeated exposure and practice in varied contexts is important.