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1) Pre/post testing shows: 1 hour of puzzle-based coding => significant improvement in student attitudes and self-efficacy re CS, esp among high school girls. https://code.org/files/HourOfCodeImpactStudy_Jan2017.pdf …
2) Students have created 56M projects on @codeorg, applying skills learned via puzzles to open sandboxes (logo-style art, block-based games, javascript apps)
I’d encourage any CS educator or student who is only familiar with one single-modality coding tool to spread their wings a little and explore. There are many great approaches, and we all have room to grow/learn.
Considering @codeorg played a big role in popularizing puzzle-based coding with our first #HourOfCode activity, I bear some personal responsibility if any tool-makers or educators have actually decided that a puzzles-only approach is best...
Based on a quick query: in the last year on http://Code.org , the # of students who created a project is 81% the # of students who have tried solving a puzzle.
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