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 1 . 60 second Recap 

60 second are  Recap is an the educational videotape are design found  in a September 2009 to  be  give 60-alternate videotape summaries and analysis of the  classic literature. The points are the  supply one- nanosecond videotape is the narrative on the plot, themes, characters, symbols, motifs, and other aspects of the  books are normally studied in the secondary seminaries in the North America. 

 A time to after its begin , 60 second of Recap's the  website offered around all 400 vids covering 35 classic erudite  workshop and 60 contemporary are titles. It has been also the entered the further than 4.5 million website are the visits. (1) During it is  alternate of time, 60 second Recap is continued to add to its content the  library, with the new 60 second Recap the  videotape" compendiums"of 10-15 individual vids covering the colorful aspects of a work  the similar as the  Beowulf or Hamlet. The website are the   currently presents to the roughly 800 vids. compassing 42 classic in erudite to  workshop, and around  all  the 250 reviews of the contemporary in books of the  implicit interest to the teenagers.

 Classroom acceptance 

60 second are  Recap won acceptance in the  seminaries, still, (1) and preceptors said they are  plant it effective in the sparking of classroom in conversations. (8) 60 second are  Recap was also cited by the  special education of  the  preceptors as a pedagogical tool for the scholars who have to a literacy disabilities that intrude with in their on capability to the comprehend in  written material. 

 2 . Academic Earth

Academic in Earth is a website are found on the  March 24, 2009, by Richard  Lud low and co-founders of Chris Bruner and Liam  Pisano,  which offers can be free online videotape courses and the academic lectures from the world's nest most  universities are  the similar as U C Berkeley, UCLA, University of the Michigan, University of Oxford, Harvard, MIT, Princeton, Stanford, and Yale.  It is  the considered a hunt of the   machine for a full- textbook in  scholarly details, with a videotape courses are  covering to over the 50 primary subject are  disciplines in ranging from the Trades and Design, Astronomy, Biology, Chemistry, Computer Science, Economics, Engineering, English, Entrepreneurship, History, Humanities, Law, Mathematics, Medicine, Philosophy, Physics, Political Science, Psychology, Religion, and Statistics.

 3.  Coursera

Coursera  Inc is a U.S.- grounded in  the  massive open a online course giver are innovated in the 2012  by Stanford in  University the  computer wisdom professors Andrew N g and Daphne Koller. (8) Coursera  in works with the universities and other associations to the offer online courses, instruments, and the degrees in a variety of the subjects. In the 2021 it was estimated that about the 150 universities are offered further than courses by Coursera. 


Coursera's earnings to rose from the $ 184 million in 2019 to$ 294 million in the  2020. To date, Coursera has not too be  made a benefit . The company are lost$ 66 million in 2020 as they are the ramped up to  marketing and advertising. 

 For the first quarter in the 2021, Coursera are the   reported in  profit of $ 88.4 million, up 64 from a time  earlier , with a net of  loss of $ 18.7 million, or $ 13.4 million on anon-G A A P base.  Coursera are said to be the  consumer benefit was $ 51.9 million, up 61, while a enterprise in the  benefit was $ 24.5 million, up too  63, and the degree of programs had been benefit of $ 12 million, up too 81. 

 For the third quarter in the 2021, Coursera are reported to benefit of $ 109.9 million, around all  33 from $ 82.7 million of a time ago. Gross the  profit was the $ 67.7 million or 61.6 of profit. Net loss was $ (32.5) million or (29.5) of profit. 


The incipiency raised an original$ 16 million backing round backed by the Kleiner Perkins Caufield & Byers and New Enterprise Associates. In 2013, G S V led to  the Series B investment, which is the totaled $ 63 million. In 2015, N E A led to  the Series C round of the adventure in backing, which are totaled further than$ 60 million. In 2017, the company are raised $ 64 million from its has  been being to investors in the  Series D round of the backing. In 2019, the company are raised $ 103 million in the  Series E round of backing from the SEEK of Group, Future Fund and N E A. The company are  extent valuation of the $ 1 billion in the  2019. In July 2020, the company are  the blazoned it had been raised $ 130 million in the  Series F backing and the  streamlining its valuation to $ 2.5 billion. 

 Business model 

 In September 2013, it was  blazoned it had been earned$ 1 million in a  profit through the trade of the  vindicated of instruments that authenticate  are the  successful course completion. (21) Coursera first rolled are out a series of the  figure- grounded course options, which is  involve vindicated credentials for the completion, in 2013. (22) As of October 2015, the company had been  raised to a aggregate of$146.1 million in  the adventure capital. 

   4. Crash Course 

Crash Course are  ( occasionally stylized as Crash Course) is an a educational YouTube channel are  started by the John and Hank Green ( inclusively the Green sisters), who  is the first achieved personality on the YouTube platform by their  in Vlog  brothers channel. 

 Crash Course was a  one of the hundred original channels are funded by the YouTube's$ 100 million original channel are  action. The channel are found a exercise on December 2, 2011, and as of January 2021, it has been accumulated over all  12 million subscribers and 1.5 billion videotape views. (4) The channel is  begin with John and Hank presenting their separate World History and Biology in series; the early history of the channel  is continued the trend of  the John and Hank presenting humanities and wisdom courses, independently. (5) In November 2014, Hank blazoned a cooperation with a PBS Digital Studios, which would you allow the channel to create  the further courses. As a result, are  multiple fresh hosts joined to the show to increase the number of the  concurrent series.