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What is not included in this review is literature related to and reporting of specific tools for teaching, learning management systems, course and content quality, online learning environments, or the role of the instructor. Rather, our focus herein was strictly related to class size for online courses in higher education. This focus ranged from undergraduate to graduate classes and the distinction was attempted when it was possible to determine from the published literature. In this narrative review, we first share the anecdotal, theoretical, and opinion works published. Next, we present the studies found in the literature. Finally, we furnish concluding remarks including gaps and future directions for research.

There is a broad opinion as expressed by Foerster (2011) that colleges and universities try to set themselves apart from competing institutions in terms of student/faculty ratio and class size. The concept is that if there are fewer students to vie for the professor’s attention, the more attention each student will receive, and the better outcome the student will have. Foerster indicated that insomuch as there are simply large numbers of people who value small classes, there must be something to the idea. He indicated, “It's extremely rare for even the lowest level online course to have more than twenty or twenty-five students” (¶ 4). Also, Shelton and Saltzman (2005) supported the notion of small class sizes online and indicated that more is required of the professor for online courses as opposed to face-to-face courses in terms of student interactions in order to engage students and to determine the degree to which they are learning. Because of that, they recommended to keep class sizes small. Likewise, Howard (2002), a professor and author of Guidelines for Effective Distance Education at the University of Mary Hardin Baylor in Texas, indicated online classes should have a small class size of 20 students.

There are interaction issues when there are too few students in online classes in terms of generating meaningful discussions. In fact, Rovai (2002) recommended eight to ten students for meaningful discussions and interactions. On the other hand, too many students may generate more messages than the students and the faculty member can attend to on a daily basis; therefore, up to 15 students in a graduate class was recommended by Colwell and Jenks (2004), and even 10 to 14 has been noted as a good number for first-time faculty members teaching online (Boettcher, 2006a). Others such as Aragon (2003) and Rovai (2002) have suggested 30 as a maximum number on online classes. Numbers of students in online classes matter, according to Dykman and Davis (2008), particularly in terms of the level of interaction possible; therefore, they recommended numbers of students in the classes online should be limited. They indicated that the larger the classes, the more impersonal they become and that quality could suffer.

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
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
How can I make nanorobot?
Lily
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
how can I make nanorobot?
Lily
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
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Source:  OpenStax, Ncpea handbook of online instruction and programs in education leadership. OpenStax CNX. Mar 06, 2012 Download for free at http://cnx.org/content/col11375/1.24
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