The document discusses how providing access to English learning materials across mobile and web platforms increases student engagement and motivation. It notes that EnglishCentral users who study with mobile access are twice as engaged as those only using web. Mobile access is key to engagement since the penetration rate of smartphones among Japanese university students is 94%, and 16.3% use language learning apps on their phones. EnglishCentral allows students to watch videos, learn vocabulary in context, practice speaking on microphones, and take quizzes across devices to track their progress.