From paidContent:
Amazon (NSDQ: AMZN) is not the only company to make an HTML5-based app announcement today: E-textbook company Kno is now allowing students to read their textbooks through Facebook and on the web.
Kno also added new interactive features to its iPad app. The “Journal” feature lets students transfer sticky notes, images, highlights, text and other content from their e-textbooks into a digital notebook. The “Quiz Me” feature turns any diagram in a Kno textbook into a multiple-choice quiz tool: It blacks out text so that students can test themselves on identifying parts of the diagram.
More info in the article.