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We are not as interested in LD behavior as in the preoccupations—as seen from the level of classroom organization—of all those adults who are professionally poised to discover LD behavior. We are less interested in the characteristics of LD children than in the cultural arrangements that make an LD label relevant. At this point Kelvin was not sure if he wanted to continue reading the article because it seemed like it might not be relevant to classroom life specifically. It also implied a severe criticism of professional educators—implied that they are too eager to find examples of LD and for this reason may misclassify students. On the other hand, Kelvin was already aware that LD are an especially ambiguous category of disability; maybe the article would help to show why. So he kept reading.

The authors continued by outlining the history of LD as a category of disability, describing this category as an outgrowth of the general intelligence testing movement during the twentieth century. By the 1970s, they argued, the concept of LD offered a way to classify children with academic difficulties without having to call the children mentally disabled. Because of this fact, the LD category was needed—literally—by well-off parents who did not want their children treated or educated as children with mental disabilities. LD as a concept and category came to be applied primarily to children from the white middle-class, and mental disability became, by default, the equivalent category for the non-white and poor.

To support this assertion, the authors reported a classroom observation of three non-white boys—Hector, Ricardo, and Boomer—while they worked together to design an imaginary research station in Antarctica. Citing actual transcripts of conversation while the boys worked, the authors concluded that all three boys showed intelligence and insight about the assignment, but that the teacher was only aware of the contributions of one of the boys. Hector systematically hid his knowledge from the teacher’s view by getting Boomer to speak for their group; Ricardo participated well in the group work but was rarely acknowledged by the other two boys. Boomer received considerable praise from the teacher, thanks to his speaking for the group. Yet the teacher was never aware of these subtleties. The authors blamed her oversight not on the teacher herself, but on an educational and cultural system that leads educators to classify or typify students too quickly or easily. Here is how they put it:

The American classroom is well organized for the production of display of failure, one child at a time if possible, but group by group if necessary…Even if the teacher manages to treat every child as capable, the children can hammer each other into negative status; and even if both…resist dropping everyone into predefined categories, the children’s parents can take over, demanding more and more boxes with which to specify kinds of kids doing better than other kinds of kids. In such a classroom, if there were no LD categories, someone would have to invent them. When Kelvin read this conclusion, he did not really disagree, but he did feel that it was beside the point for most teachers. Maybe children do get classified too easily, he thought, but a teacher’s job is not just to lament this possibility, as the authors seemed to be doing. Instead their job is to help the real, live children for whom they have daily responsibility. What teachers need are therefore suggestions to avoid misclassifying students by overlooking key information about them. Kelvin wished, at the end, that the authors had made some of these suggestions.

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
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s. Reply
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s.
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Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
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s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
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s.
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SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
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Cied
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I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
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Porter
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Yasmin
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Cesar
I'm interested in nanotube
Uday
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what is nano technology
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what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
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AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
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Damian
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Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
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Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
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how did you get the value of 2000N.What calculations are needed to arrive at it
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Source:  OpenStax, Educational psychology. OpenStax CNX. May 11, 2011 Download for free at http://cnx.org/content/col11302/1.2
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