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. Each Student\'s Book contains approximately 90 hours of material across 12 topic-based units - with additional grammar and pronunciation practice added for the Second Edition. Student\'s Book, Level 4 is at the intermediate CEFR level (B1-B2).