[OLPC library] Curly Logo / OLPC

Bert Freudenberg bert at freudenbergs.de
Thu Nov 29 08:01:39 EST 2007


On Nov 29, 2007, at 12:25 , David Jones wrote:

>
> On 29 Nov 2007, at 10:44, Bert Freudenberg wrote:
>
>> On Nov 29, 2007, at 11:39 , David Jones wrote:
>>
>>> On 28 Nov 2007, at 20:28, Ian Bicking wrote:
>>>>
>>>> I notice it already has support for ÷ and ×, which coincidentally
>>>> the XO has keys for.
>>>
>>> Perhaps not such a coincidence.  Part of my background motivation  
>>> for
>>> Curly Logo was accessibility.  That led me to think that using *
>>> and / instead of × and ÷ was a barrier to understanding: before  
>>> using
>>> almost any computer programming language we have to explain that *
>>> denotes multiplication and / denotes division, it's just an
>>> unnecessary hurdle.  Of course my keyboard doesn't have × and ÷
>>> keys.  I'm sure similar thoughts occurred to the designers of OLPC.
>>
>> Do you support "·" and ":", too? These are used for multiplication  
>> and division in schools here ...
>
> Not yet it doesn't.  But things like this are amongst the easiest  
> things to add.
>
> Colon could be a problem as it has a very traditional meaning in  
> Logo, :x means the value stored in x.
>
> Where is here for you?

Germany. The German Wikipedia page claims they are used more  
universally than × and ÷, but I don't know how valid that is.

- Bert -




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