iLrn: Heinle Learning Center allows you to assign, assess, and track progress with a click of the mouse! With iLrn Heinle Learning Center, everything students need to master the skills and concepts of the course is built into this dynamic learning environment. iLrn: Heinle Learning Center includes an audio-enhanced eBook, assignable textbook activities, companion videos with pre- and post-viewing activities, partnered voice-recorded activities, an online workbook and lab manual with audio, interactive enrichment activities, and a diagnostic study tool to better prepare students for exams.