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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

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
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
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
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.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
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
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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