> Has anyone actually made a complex project with these initiatives, and had it spark an interest in computing/electronics that didn't already exist? Have they managed to make the jump from visual interfaces to lines-of-code? Is there any evidence that these programs REALLY help when it comes to engaging a wider group of people?
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Personally, I'm not sure if "visual programming" itself is introducing anything useful to make education easier. The difficult thing in getting started in writing code isn't writing, it's all the bullshit you have to do to set things up (installing a compiler, editor / IDE, creating projects, generating boilerplate code, deploying, etc.). Make that simple, and learning to code becomes simpler too.
About the only case where I can imagine "visual programming" being better than writing code is if you're trying to teach 3-5 y.o.