OpenEd assesses 'most effective' online learning resources -- THE Journal | Creative teaching and learning | Scoop.it
From thejournal.com - September 25, 2015 12:53 AM

"Animated flashcards and sub-two-minute videos turn out to be the most effective online resources for K-12 against all other common options. That's the finding determined by OpenEd, which recently studied the data generated from the results of assessments given to students who used its free online resources for educational purposes ..."