Facebook and Angry Birds were two of the most downloaded apps last year, but that doesn’t mean web and mobile applications are all play, U.S. News reports. There are tens of thousands of educational apps aimed at teaching high school students everything from physics to Japanese. But not all of those apps are created equal, warns Teacherswithapps.com [1], a site created by two teachers to evaluate educational apps, and some educators have taken matters into their own hands. Jeff Scheur, an English teacher at Whitney Young Magnet High School [2] in Chicago, created an app to drill his students on apostrophes, conjunctions, and run-on sentences. Scheur developed NoRedInk [3], a Web-based application, when traditional red ink wasn’t yielding the desired results in his classroom. Despite marking up essays with corrections and comments, his students continued to make the same mistakes…