Project Math Access DVD 04 - Graphing Part 2- Part 02 Transcript Start Audio Description: Part two, AGC, plotting and embossing graphs. ROB: So, probably the most common piece of the AGC that our customers use is the plotting. So, I'll bring up the graph page with an “F3," and visually that just brings up a visual representation of what we are about to plot. As you can hear from the screen reader, it'll work audibly without the graph being displayed. AGC: [calculator expression one] ROB: Thank you. So, if I bring up the data set here. I can enter in anything I choose. All I'm typing in... this is standard calculator notation. This is ‘‘x'‘ with a caret and a 2 for ‘‘x'‘ squared. Again, exactly like the TI calculators. [beep] That beep means my plot is done. And so for the visual folks, who can see below here, there is a data set of all these plots. Each point is represented here as an ‘‘x‘‘ value. Then we have the “y" value or “f(x)“ value. And it's kind of hard to see, probably on the video, but there‘s the derivative and then second derivative also in the data set, so a lot of good information in this data. Gaylen, do you have a comment? KAPPERMAN: Yes, I do. Now, would you show us how a blind person would gain access to that information? ROB: Sure. I'm just going to hit the tab key. AGC: [data table one minus 10 point 0] ROB: That plops me right into the ‘‘x'‘ value, which is right now, I'm at minus, negative 10, minus 10.0. AGC: [minus 9 point 9, 6] ROB: And then I just use the arrow keys to go down or over. AGC: [y equals 100 point 0] ROB: So, for example, negative 10, x equals an f(x] of 100; AGC: [y equals 100 point 0] ROB: And I'll just keep going over; AGC: [y prime equals minus 20 point 0] ROB:; So, “y" prime, or derivative, is negative 20; AGC: [second derivative is ] ROB:; and that‘s blank because there‘s nothing next to it. AGC: [x equals minus 9 point 9 6; y prime equals minus 99 point 9 0 2; y prime equals minus 19 point 9 2; second derivative is plus] ROB: So, that gives you a kind of an idea of something that has a little more data in it. Anyway, to sum up your answer, I'm just using arrow keys to navigate through here. I can also copy and paste in here. If I hold down “shift" I can select an area, copy that to the clipboard and then I can bring that into a spreadsheet, or a homework document that I need to print out for my teacher or whatever. KAPPERMAN: And can you also, can you send that off to the Tiger and emboss that graph? ROB: The graph I can, the data set actually doesn't emboss from the calculator. If you want to emboss this and specifically, well, right now it's in just regular text notation, and I would either need to translate this into literary or math braille. KAPPERMAN: But that‘s possible to do? ROB: Oh certainly. I would just copy and paste this into Word or WordPad or something and then just print it off. KAPPERMAN: And then print it off and emboss that? As well as, then you can also emboss the graph itself, is that correct? ROB: Absolutely, the graph you can emboss right from the calculator and why don't we just do that. Well, actually let me show you something before you emboss it. Let's say I'm in a classroom, or in an exam and I need on the fly information. If I hit “F5“, it'll actually do an audio plot of the graph itself. [one constant high to low, then low to high-pitched tone] AGC: [x equals 10 point 0, 0, 0; y equals 100 point 0, 0, 0; start a graph] ROB: Okay great. And what that kind of shows us is that is just a feel of the shape of the physical behavior of the expression. So I'm not getting x = whatever, y = whatever, I can do that, I can step through the graph and other things like that with the arrow keys, but that gives me an idea of the shape. So I could perhaps have an earbud headphone and a laptop in class during a lecture and be working right along side my classmates, once I kind of build that skill of understanding what that crazy audio tone means to me. I had practice with that, but you know, again I had practice with that. So to print, I just go to the “file menu" So to print, I just go to the “file menu" which is also a “control P" hot key. AGC: [HP Deskjet 3320 Series] ROB: So, right now it's just pointing to my default printer AGC: [printers list, HP Deskjet, Tiger Max] ROB: So grab my Tiger Max and actually this is a good point to describe the four types of output on the AGC. So, there's four ways to get graphical information out of this: one is the audio plot we just heard; the second is to print this to an ink printer and to turn it into my teacher or whatever, just an ink copy; the third way is to take that ink copy and to puff it or have somebody wheel it for me, so there's that way; and then the final way is to print it to a Tiger embosser which will emboss it just straight out of the calculator. So, I can go in here and change my page formatting or whatever. One thing I will change is that I'll add print lines. So that way it'll add just a little bit more information to my plot and then I will just print it off. I can change my title title and all sorts of things. AGC: [button, print data table one] Audio Description: The Tiger Max is creating a tactile version of the parabola. ROB: Okay, so now that I have this printout, this is kind of a way to develop those skills of understanding the audio plot. I can feel along this plot as I plot it again, so I hit that audio tone and I can follow along with my finger.