Thanks Steve, Yep, and I would love to do the building blocks for this a whole lot better in the successor to Etoys (which we are starting to work on).
Cheers, Alan. ________________________________ From: Steve Thomas <[email protected]> To: Alan Kay <[email protected]> Cc: Caroline Meeks <[email protected]>; [email protected]; Patricia Curtis <[email protected]> Sent: Wed, October 27, 2010 7:05:18 AM Subject: Re: [IAEP] Ideas Folks, The Physical rods are best, but here is a set of virtual rods with direction arrows with the ability to change the transparency of all the rods on your playfield in Etoys (to see how its done, just get the hale for a particular buttion and from the menu click on "open underlying scriptor" Actually it would be fairly easy to have kids create thcleir own sets of Virtual rods in Etoys using polygons (hint: shift click on a polygon to get its handles). The playfields in the project referenced here can be used you could have the kids drag out their own playfield then from the menu select "playfield options ..." and select "grid visible when gridding" and "use gridding". Then from the same menu select "set grid spacing ..." Stephen On Wed, Oct 27, 2010 at 8:28 AM, Alan Kay <[email protected]> wrote: Hi Folks, > >We have used Cuisenaire rods a lot for all grades. > >We always take magic markers and draw arrowheads on one end of the rods to >give >a sense of direction to the magnitudes when used in operations. > > >Vectors are a very powerful way of thinking about numbers and quantity and >this >is a great way to get them started with a measuring and magnitude idea that >generalizes to more dimensions. > > >After a while you can start to use slender dowels for 2D calculations, etc. > >Etoys objects are actually vectors, and Etoys actually has a "hidden" vector >vocabulary for doing vector arithmetic in two dimensions. > >Cheers, > >Alan > > > > ________________________________ From: Steve Thomas <[email protected]> >To: Caroline Meeks <[email protected]> >Cc: [email protected]; Patricia Curtis <[email protected]> >Sent: Tue, October 26, 2010 9:49:44 PM >Subject: Re: [IAEP] Ideas > > > >On Thu, Oct 21, 2010 at 12:01 PM, Caroline Meeks <[email protected]> >wrote: > >I have had requests for a few things over the years. >> >> >>http://en.wikipedia.org/wiki/Cuisenaire_rods - these are popular >>math manipulative and an online version would be cool. Here are some Cuisinaire Rods in Etoys (sorry Patricia, I am NOT trying to discourage you, just support your request on what is needed) Fraction Bars and Number Lines and Fraction Tools both have Cuisenaire Rods built into the projects. The rods can not only be used for activities shown in the projects (and other activities and lesson plans), but also for kids to journal/describe their understanding of fractions and units. Stephen > >_______________________________________________ >IAEP -- It's An Education Project (not a laptop project!) >[email protected] >http://lists.sugarlabs.org/listinfo/iaep >
_______________________________________________ IAEP -- It's An Education Project (not a laptop project!) [email protected] http://lists.sugarlabs.org/listinfo/iaep
