News Corp’s education division Amplify on Monday unveiled a digital curriculum aimed at middle school students in a move to kick-start growth in the unit after years of investment. The curriculum is for English Language Arts aimed at sixth-, seventh-, and eighth-grade students, and features content from a library of e-books, dramatic readings by actors, story animations, and role-playing games about classic authors such as Edgar Allan Poe. “If this succeeds, teachers will want to use this to orchestrate their lessons,” said Joel Klein, the chief executive of Amplify and former New York City schools chancellor. Amplify is betting on the changes roiling U.S. school districts, which are spending billions of dollars on digital technology at the expense of textbooks.