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The Scratch environment exemplifies a tool+community approach to teaching elementary programming skills, as it includes a website where users can publish, discuss, and organize animations that are programs. To explore this environment's effectiveness for helping people to develop programming skills, we performed a quantitative analysis of 250 randomly-selected users' data, including over 1000 of their animations. We measured skill based on four models that had proven useful in prior empiricaldoi:10.1145/2858036.2858349 dblp:conf/chi/MatiasDH16 fatcat:kfbedoxiezhgvcesrcvnpypnfy