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The other end of the age spectrum has also expanded. Many individuals take courses well into adulthood even if they do not attend formal university or college. Adult education , as it is sometimes called, often takes place in workplaces, but it often also happens in public high schools or at local community colleges or universities. Some adult students may be completing high school credentials that they missed earlier in their lives, but often the students have other purposes that are even more focused, such as learning a trade-related skill. The teachers of adult students have to adjust their instructional strategies and relationships with students so as to challenge and respect their special strengths and constraints as adults (Bash, 2005). The students’ maturity often means that they have had life experiences that enhance and motivate their learning. But it may also mean that they have significant personal responsibilities—such as parenting or a full-time job—which compete for study time, and that make them impatient with teaching that is irrelevant to their personal goals or needs. These advantages and constraints also occur to a lesser extent among “regular” high school students. Even secondary school teachers must ask, how they can make sure that instruction does not waste students’ time, and how they can make it truly efficient, effective, and valuable. Elsewhere in this book (especially in [link] , [link] , and [link] , about assessment and instruction), we discuss these questions from a number of perspectives.

New trend #2: using technology to support learning

For most teachers, “technology” means using computers and the Internet as resources for teaching and learning. These tools have greatly increased the amount and range of information available to students, even if their benefits have sometimes been exaggerated in media reports (Cuban, 2001). With the Internet, it is now relatively easy to access up-to-date information on practically any subject imaginable, often with pictures, video clips, and audio to accompany them. It would seem not only that the Internet and its associated technologies have the potential to transform traditional school-based learning, but also that they have in fact begun to do so.

For a variety of reasons, however, technology has not always been integrated into teachers’ practices very thoroughly (Haertel&Means, 2003). One reason is practical: in many societies and regions, classrooms contain only one or two computers at most, and many schools have at best only limited access to the Internet. Waiting for a turn on the computer or arranging to visit a computer lab or school library limits how much students use the Internet, no matter how valuable the Internet may be. In such cases, furthermore, computers tend to function in relatively traditional ways that do not take full advantage of the Internet: as a word processor (a “fancy typewriter”), for example, or as a reference book similar to an encyclopedia.

Even so, single-computer classrooms create new possibilities and challenges for teachers. A single computer can be used, for example, to present upcoming assignments or supplementary material to students, either one at a time or small groups. In functioning in this way, the computer gives students more flexibility about when to finish old tasks or to begin new ones. A single computer can also enrich the learning of individual students with special interests or motivation. And it can provide additional review to students who need extra help. These changes are not dramatic, but they lead to important revisions in teachers’ roles: they move teachers away from simply delivering information to students, and toward facilitating students’ own constructions of knowledge.

Questions & Answers

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
what is biological synthesis of nanoparticles
Sanket 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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