This week Thumbplay, an online platform of mobile entertainment content, expanded their services to allow users to download reference materials and study aids like CliffsNotes and American Heritage Dictionaries and titles from Scientific American Magazine and the Sierra Club from their cell phones.

The new titles span a wide variety of classes and disciplines including:

• Language and grammar aids: 100 Words Almost Everyone Confuses & Misuses, 100 Words Every High School Freshman Should Know, 100 Words Every High School Graduate Should Know, 100 Words To Make You Sound Smart
• Literature: CliffsNotes for classic works, including Beowulf,The Canterbury Tales, Great Expectations and Julius Caesar
• History: Great American History Fact Finder
• Science: Scientific American: Ask The Experts, Scientific, American: Geography, Scientific American: The Human Body, 100 Words Science Words Every College Graduate Should Know
• Mathematics: Scientific American: Mathematical Games

“With nearly 85 percent of the U.S. population using cell phones, we’re seeing an increasing demand for ever more engaging and useful content,” said Are Traasdahl, Thumbplay’s CEO and founder. “We’re thrilled to add these applications to our ever-expanding content library.”