This guest post is written by Kara Hageman, a PhD student in Educational Psychology at the University of Iowa and former high school science teacher. She blogs at www.spiralingassessment.com. Kara can be reached via email at kara-hageman@uiowa.edu or via Twitter @hageman97

A poem is learned by heart and then not again repeated. We will suppose that after a half year it has been forgotten: no effort of recollection is able to call it back again into consciousness (Hermann Ebbinghaus, 1885, p. 8).
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