John Clements wrote at 08/27/2010 06:29 PM:
My earlier comment isn't suggesting that this isn't useful; it's asking whether doing this *simultaneously* with a separate display that's using substitution to evaluate an expression would cause cognitive overload.
If none of the languages people has a flash of inspiration, how about finding an HCI or visualization specialist in one of the universities, and enlisting them as a collaborator?
(I'd bet that these multiple views could be made intuitive, if approached as an interactive graphical visualization design problem. Maybe they can get a publication out of the approach alone. Whether an alternative approach using only some arrangement of existing GUI widgets could be made accessible enough to students, I could not guess offhand. Were I not saturated with Racket consulting work at the moment, I'd love to tackle this HCI/viz problem myself.)
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