[plt-scheme] Re: HTDP - evidently not for everyone.

From: Grant Rettke (grettke at acm.org)
Date: Sat Feb 13 07:54:32 EST 2010

On Wed, Feb 10, 2010 at 12:05 PM, wooks <wookiz at hotmail.com> wrote:
> I show them a posn data structure. They get it. I show them how to
> extract data from it and what the contracts are for the constituent
> functions that you get for free. They get it. I give them an example
> of a date data structure and illustrate how to manipulate it. They get
> it. Then I ask them to define a time data structure and write
> something like time=? and some of them can't write the template (none
> of them managed to write the program). There is a complete inability
> to see the similarity between the way the different data structures
> they have been shown have been manipulated.

It seems like once you get the examples you would get the concept,
too... (you can do the same thing with any container now matter how it
is shaped kind of a thing).

Not the case for you other teachers too?

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