Why the feedback is powerful, but also variable in its effects? The Evidence Based Education's perspective : Review of the text by John Hattie and Shirley Clarke, "Visible Learning: Feedback", Routledge, 2019

Abstract

The text “Visible Learning: Feedback” intends to offer an answer to the following question: 'Why is feedback so powerful, but at the same time so variable in its effects?'. In fact, not all feedback is effective and neither can provide the same feedback in different situations with certainty.

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