Descripción o resumen: Touchstone Second edition is an innovative four-level American English course for adults and young adults, taking students from beginning (A1) to intermediate (B2) level. Touchstone uses a corpus-informed syllabus ensuring students are learning the language that people really use. Activities include a strong focus on inductive learning, personalized practice, and encouraging learner autonomy. Student's Book, Level 4A, includes Units 1-6 of Level 2 Student's Book and is at the intermediate CEFR level (B1-B2). This version of the Student's Book contains an activation code that grants access to the Online Workbook, Level 4A for 12 months. The Online Workbook provides practice of the language studied in the Student's Book. Exercises are graded automatically and students can easily track their progress and scores.