Two case studies evaluating the effectiveness of a flipped classroom compared to a traditional classroom were performed. The studies were conducted from April 2014 to January 2015 at a private university in Tokyo, targeting 60 first-year and 25 third-year undergraduates, respectively. In the first study, an assessment of pre- and post-treatment Test of English for International Communication (TOEIC) scores revealed students exposed to the flipped lessons improved from a mean of 474 (SD 111) to 649 (SD 96), which was greater than that of the control students who improved from 484 (SD 123) to 617 (SD 115). In the second study, students were exposed to flipped lessons for 24 weeks using a variety of materials such as the "Lecture Ready II" digital text with iPad, COOORI e-learning software for learning words and phrases related to the digital text, ATR CALL Brix e-Learning, Newton e-Learning, and TED Talks. An assessment of pre- and post-treatment TOEIC scores and Oral Proficiency Interview by computer-based (OPIc) speaking test results showed students improved from a mean of 577 (SD 132) to 758 (SD 105), an improvement of 24% in just the speaking test. Surveys administered after exposure to the flipped lesson activities indicated students were satisfied with their flipped classroom lessons and motivated by the Blended Learning (BL) environment that incorporated mobile learning. [For full proceedings, see ED564162.]