Touchstone, together with Viewpoint, is a six-level English program based on research from the Cambridge English Corpus. 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 the Level 4 Student's Book and is at the intermediate CEFR level (B1-B2).