References
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Taub, Alexander. "NoRedInk Is Growing At Mach Speed, 10% Of The US School System Using." Forbes. 19 Dec. 2013. Web. 24 June 2014. <http://www.forbes.com/sites/alextaub/2013/12/19/noredink-is-growing-at-mach-speed-10-of-the-us-school-system-using>.
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NoRedInk. Web. 10 June 2014. <http://www.noredink.com/>.
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Taub, Alexander. "NoRedInk Is Growing At Mach Speed, 10% Of The US School System Using." Forbes. 19 Dec. 2013. Web. 24 June 2014. <http://www.forbes.com/sites/alextaub/2013/12/19/noredink-is-growing-at-mach-speed-10-of-the-us-school-system-using>.
Wong, Wailin. "Reporter's Notebook: Educational Startup NoRedInk Raises $2 Million." 22 Aug. 2013. Chicago Tribune. Web. 17 June 2014. <http://articles.chicagotribune.com/2013-08-22/business/ct-biz-0822-tech-notebook-20130822_1_grammar-drills-venture-capital-google-ventures>.