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https://www.youtube.com/watch?v=T3tKmhISowM

La escalera de la retroalimentación fue creada por el investigador de Harvard Daniel Wilsonhttp://www.pz.harvard.edu/who-we-are/people/daniel-wilsonDaniel WilsonDaniel Wilson is the Director of Project Zero at the Harvard Graduate School of Education (HGSE), where he is also a Principal Investigator, a...Harvard