Review Excerpt: Featuring a distinctive green rubber bumper with a handy hanging ring, the long-awaited XO Learning Tablet ($150, www.xo-learning.org) is a 7” Android tablet that comes pre-loaded with 173 apps and hundreds of open-source books (numbers as of September 2013) that vary in quality and content. The tablet has excellent content management options, for up to three children. Separate English and Spanish content is available, too. The apps are organized both alphabetically or into 16 career categories (doctor, artist, scientist), each with a Wikipedia link to a famous person that represents the career. For teaching there’s Maria Montessori, and for writing, for example, there are six apps and a link to William Shakespeare’s bio. The apps are listed by age under the categories beginner, intermediate and advanced. Subscribers, please log into our database using your password to read the full review along with our rating.