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1. 60 alternate Recap 

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

A time to after its start, 60 second of Recap's the website offered around all 400 vids covering 35 classic erudite factory and 60 contemporary are titles. It has been also entered the farther than4.5 million website are visits.( 1) During it is alternate of time, 60 alternate Recap is continued to add to its content the library, with the new 60 alternate Recap the video" albums" of 10- 15 individual vids covering the many aspects of a work the analogous as the Beowulf or Hamlet. The website are the presently current to the roughly 800 vids. compassing 42 classic in erudite to factory, 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 instructors said they are  factory it effective in the sparking of classroom in exchanges.( 8) 60 second are the Recap was also cited by the special education of the instructors as a pedagogical tool for the scholars who have to a knowledge disabilities that intrude with in their on ability to the comprehend in written material. 


 2. Academic Earth 

 Academic in Earth is a website are begin on the March 24, 2009, by the Richard Lud low andco-founders of Chris Bruner and Liam Pisano, which offers can be free online video courses and the academic lectures from the world's best most universities are analogous as U C Berkeley, UCLA, University of the Michigan, University of Oxford, Harvard, MIT, Princeton, Stanford, and Yale. It is considered a quest of the machine for a full- text in scholarly information, with a video courses are the covering to over the 50 primary subject are control 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 aU.S.- predicated in the massive open the online course supplier are start in the 2012 by Stanford in University the computer wisdom professors Andrew N g and Daphne Koller.( 8) Coursera in workshop with universities and other associations to the offer online courses, instruments, and the degrees in a many of the subjects. In 2021 it was the estimated that over 150 universities are offered further than courses through Coursera. 



 Coursera's earnings to rose from the $ 184 million in 2019 to$ 294 million in the 2020. To date, Coursera has been not too be made a benefit . The company are lost$ 66 million in the 2020 as they are 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 ahead, 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$24.5 million, around too 63, and the degree of programs had a benefit  of$ 12 million, over too 81. 


 For the third quarter in 2021, Coursera are reported to profit of$109.9 million, around all 33 from$82.7 million of a time agone

 . Gross the benefit was$67.7 million or61.6 of profit. Net loss was$(32.5) million or(29.5) of profit.



 The nascency raised an original$ 16 million backing around backed by the Kleiner Perkins Caufield & Byers and New Enterprise Associates. In the 2013, G S V led to the Series B investment, which is the totaled$ 63 million. In a 2015, N E A led to the Series C round of the adventure in backing, which are the totaled further than$ 60 million. In 2017, the company are raised$ 64 million from its has start to investors in the Series D round of the backing. In the 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 earned valuation of the$ 1 billion in the 2019. In a July 2020, the company are announced 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 announced it had earned$ 1 million in a benefit by 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- predicated course options, which is involve vindicated credentials for a completion, in 2013.( 22) As of October 2015, the company had been raised to a total of$146.1 million in the event capital. 


 4. Crash Course 

 Crash Course are( sometimes stylized as Crash Course) is an a educational YouTube channel are started by the John and Hank Green( collectively the Green sisters), who is the first achieved personality on the YouTube platform by  their in Vlog sisters 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 begin a exercise on December 2, 2011, and as of January 2021, it has been accumulated over all the 12 million subscribers and1.5 billion video views.( 4) The channel is launched 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, singly.( 5) In the November 2014, Hank announced a cooperation with the PBS Digital Studios, which would you allow the channel to produce the farther courses. As a result, are multiple fresh hosts joined to the show to increase the number of the concurrent series. 

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