Re: LOGO-L> Ellipse Thanks, but....?

[rimpey@netspace.net.au (Richard Impey)]

Gidday Evan,

Most children at an elementary (K - 6)level of schooling have difficulty
conceptualising many things that adults take for granted such as the
existance of other countries and how far away they are, that the sun is a
star that has been burning for millions of years (unless you are a
creationist?) that if people like us here in Australia are standing on the
top of the world how come all you Northern Hemisphere people don't fall
off???

Simplistic basic models of naturally occuring phenomena are sometimes all
that are required to provide the initial conceptual basis for further, more
sophisticated learning. Hence a simple model of planets orbiting the sun.

Apart from that I and many other teachers are also mere learners and
wouldn't have a clue how to program in MicroWorlds the concepts that you
suggest. I'm having enough troubles grasping the ellipse procedure.
(Although the vocal majority probably would be able to program at that
level)

I would be very happy if you could provide us with that expertise then all
it would require is for us to link the turtles to the
procedures....hopefully :-)
Evern better, may be others in the news group might feel especially
challenged to offer some solutions to the problems you have suggested.



Cheers Richard

 Richard Impey wrote:
>>
>> A big thank you to all who responded again to my requests for help.
>>
>> You will be pleased to know that all the turtles are now happily
>> rotating/orbiting.


Evan wrote.....
>I'm glad you're glad, but none of the solutions I saw actually
>looked good to me in terms of:
>  - modelling gravitational attraction
>  - putting the sun at one of the foci of the ellipse
>  - modelling the change in the speed of the orbit
>  - allowing for further deveopment into a system where
>    the sun also moves, moons exist, and planets affect eachother's
>    orbits.
>
>Please let me know whether you received any replies which
>do all this an dwhether you care.
>
>  -- Evan

=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v

                        Richard Impey
                        Assistant Principal (Acting)
                        Learning Technologies and Art Specialist
                        Phone 0011 61 3 9509 6872
                        Caulfield North Primary School
                        186 Balaclava Road
                        Caulfield North 3161
                        Melbourne, Victoria, Australia


=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v=v
=v


---------------------------------------------------------------
Please post messages to the Logo forum to logo-l@gsn.org.  Mail
questions about the list administration to logofdn@gsn.org.  To
unsubscribe send    unsubscribe logo-l    to majordomo@gsn.org.