Education Bookcast

I stumbled across a fascinating paper looking into how children conceptualise the world around them. Mental Models of the Earth: A Study of Conceptual Change in Childhood shares an experiment where children were asked questions about the shape of the Earth, and the authors found six (!) different mental models that the children had: rectangular, disc-shaped, spherical, flattened sphere, hollow sphere, and the bizarre "dual Earth" model. There are important theoretical and pedagogical implications of an enquiry like this. Cognitive scientists argue about the right way to think about novices' preconceptions - do they have small, fragmented pieces of knowledge with no consistency on further probing; or self-consistent "alternative theories" that can generate answers to novel questions, albeit wrong answers? The answer to that theoretical question leads to different implications about teaching - are we aiming to provide knowledge where there is very little, and consolidate the little bits of correct thinking into