The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-OneTutoring – Nachhilfekompendium.de

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The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-OneTutoring

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Geschrieben von Stephan Layh
29. Mai 2021

Hier geht’s zum link:

https://facultycenter.ischool.syr.edu/wp-content/uploads/2012/02/2-sigma.pdf

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