I like the idea to show the +x on the side that adds quite a bit to the presentation.
design question for x and y: two sliders? one slider one text input? two sliders and text inputs? --Jason On Tue, Mar 17, 2009 at 12:51 AM, Frederick Grose <[email protected]> wrote: > 2009/3/16 Jason Rock <[email protected]> > > > > I would like to throw together a program to teach children multiplication > through repeated addition, but since it isn't really the sort of thing that > you just throw on flash cards I'd like to get some insight from other people > before I start programming. > > > > My idea is given multiplication between x and y. > > Allow keyboard input for x from 0 to ~12 > > y depends on a slider that is discrete on 0 to ~12 > > > > then display a "matrix" of images where the number of images across is x > and down is y > > > > something that looks like > > **** > > **** > > would represent 4*2 > > x*y would be displayed somewhere on the app > > > > Does that sound like the sort of thing that would actually help students > learn the idea of multiplication? > > > > ===Code Stuff=== > > 1) What is the best way to display an "array" of images so that (being > vector graphics) the images could re-size to take up as much room as they > can? > > > > --Jason > > Seems as this would demonstrate multiplication through repeated > addition, if the incremental changes showed the intermediate sums both > graphically and with numerals and operation symbols. > > + x > __ 0 0 = 0 > ** +2 = 2 x 1 = 2 > ** +2 = 4 x 2 = 4 > ** +2 = 6 x 3 = 6 > ** +2 = 8 x 4 = 8 > > Some way to display a problem to that the tool can solve if the child > experiments. And then, can let the child use that understanding to > prove that the result is has to true. Perhaps through repetition and > strange but beautiful cases. > > This could also teach the use of multiplication to calculate simple > areas. (Where is Ed Cherlin and his virtual Cuisenaire rods?) > _______________________________________________ > FourthGradeMath mailing list > [email protected] > http://lists.sugarlabs.org/listinfo/fourthgrademath >
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