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A review of the Khan Academy website. Watch short videos that cover many subjects, that explain concepts in a great and easy to understand conversational manner.

Khan academy

(External Link)

  • A not-for-profit organisation with the mission of providing a world-class education to anyone, anywhere
  • The Khan Academy is all about using video to explain the world, with the work focussed on creating a good experience for students
  • They place deep understanding of content above anything else
  • Videos cover chemistry, organic chemistry, physics, maths, biology, history, economics

What the website offers:

  • Over 1800 videos, it is easily the most exhaustive collection of instruction on the internet
  • Learners can fill in almost any of their "gaps" from class with the content on this site
  • The content is in 10-20 minute videos especially made for viewing on the computer
  • Great conversational style of the videos – not what people expect when receiving maths and science instruction
  • You can access exercises by logging in – if you have a Gmail or Facebook account you simply sign in with these when prompted after clicking on“do exercises” at the top of the page. You can watch the relevant video and then attempt to complete the exercise, and submit your answer online

Classroom use

  • The videos do not follow a curriculum
  • The author believes that someone who truly understands the core concepts will thrive academically regardless of the curricularcontext
  • Because of the granular nature of the 10 minute videos, the content can be mapped to almost any state's or nation's standards
  • Khan Academy videos can be downloaded and saved to a flashdrive

Teacher and user comments

  • I think resources like the Khan Academy have a lot more potential in higher ed than things like lecture capture systems. I’d much ratherhave my students watch a few of these videos before class, then work through more problems and questions with me during class... I would imagine that many ofmy students would get more out of these videos than they would reading the textbook. I can’t see these kinds of videos replacing classroom instruction, butfor giving students first exposure to topics and for providing them with reinforcement after class – yeah, they’ve got lots of potential. (External Link)
  • I saw the piece on this wonderful teacher on PBS. Most of us strive to create an environment where the learner can be exposed to a variety ofexplanations about the phenomena we study. These certainly would be part of that mix as long as we fully credit the importance of the author's/teacher's work toour students. One day, we will hopefully teach ourselves out of our jobs (External Link)
  • I am now in college and learning more than I ever have in my life. But an inadequate math background has been holding me back. I found theKahn Academy in June of 2009, right after I completed Math 141 ( a college algebra course). I have spent the entire summer on your youtube page. And I justwanted to thank you for everything you are doing. You are a Godsend. Last week I tested for a math placement exam and I am now in Honors Math 200. No questionwas answered incorrectly. My placement test holder was so impressed by the breadth of my knowledge of math that he said I should be in Linear algebra. Mr.Khan, I can say without any doubt that you have changed my life and the lives of everyone in my family. I wish you and the Khan Academy the best of luck. (External Link)

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Physics - open resources and tools. OpenStax CNX. Jun 02, 2011 Download for free at http://cnx.org/content/col11308/1.3
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