I can't say that I'm familiar with frameworks around Scratch for development. However, in a general sense, building a backend server that provides a web interface for usage on an iPad seems perfectly reasonable to me. I've never done exactly that for development tools, but I've used Yesod for making mobile-friendly sites plenty of times.
Dear list,
I built a compiler in Haskell for a primary school third-grade
programming concept. It features in the math workbook the class uses.
The language is tiny and its semantics are towers of stacked cubes [*].
The compiler currently has:
* a parsec parser
* a highlighter for parse errors
* a pretty-printer for the language (inverse to the parser)
* an SVG generator
Education goals are
1. procedural thinking (the language has non-nested loops)
2. abstraction
2a. try to imagine the tower by looking at the source code
2b. identitfy the program whose semantics is a given tower
3. the write code-compile cycle (understand error messages)
The target school uses iPads (presumably of the pre-arm generation)
whence cross-compiling is probably too much hassle. Therefore I am
considering wrapping the compiler in a Yesod webserver, as SVG is
natively embeddable in HTML. Is the webserver approach favourable for a
class environment? Could I have hacked it together more easily using
other education frameworks, e.g. Scratch?
Cheers,
Olaf
[*] The semantics is even a monoid homomorphism from the monoid of
sequences of commands to the commutative monoid of cube towers.
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