Optimal video length for student engagement is six minutes …

According to this report by Philip Guo, Juho Kim, and Rob Rubin, who studied student engagement with online courses offered by the edX consortium (edX’s Wikipedia here). Guo, Kim, and Rubin took all 862 educational videos from four edX courses offered in the fall of 2012 and classified each video according to its type (e.g., traditional lecture, problem-solving tutorial) and its production style (e.g., PowerPoint slides, Khan-style tablet drawing, talking head). They also mined the edX server logs to obtain over 6.9 million video watching sessions from almost 128,000 students. After all was said and done, they conclude: “Shorter videos are much more engaging. Engagement drops sharply after 6 minutes. Recommendation: Invest heavily in pre-production lesson planning to segment videos into chunks shorter than 6 minutes. This is the most significant recommendation!” That’s what we thought … 

(Hat tip: our hero Tyler Cowen.)

This entry was posted in Questions Rarely Asked, Web/Tech and tagged , , . Bookmark the permalink.

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