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What Counts As Evidence in Changing Practice?

(This is one of my longer posts, but it necessarily deals with quite a lot of detail – I’ve tried to shorten it through the inclusion of links to further detail) A few weeks ago I was embroiled in a heated (though ultimately futile) argument with a teacher from Australia who claimed that I was training teachers in a methodology (Project-Based Learning) for which there was no positive evidence. Even as I was presenting the evidence, I knew it would make little difference to his view: for all the supposed impartiality of educational researchers, personal bias and the cherry-picking of …

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