English for Critical Thinking is an instructional textbook used in the teaching of English as a foreign language in Indonesia for senior high school students. The contents of this book are based on the latest curriculum. The materials are arranged in accordance with students' daily life context so that it is suitable with the students' interest and psychological characters. Equipped with the QR code tool, students are also able to learn some digital materials more actively and creatively. These are features displayed in this book: Preparation is a warming up activity to stimulate students before learning the main materials. Core Material provides the main material for each lesson. Get the Expression is provided to increase the students' language competence in speaking. Language Usage delivers grammar knowledge related to the material discussed in a lesson. Language Use gives students some activities in learning English skills. Exercise is provided to evaluate students' English knowledge. Summary and Reflection helps the students' to review the lesson. Enrichment provides entertainments and light information. Project for Pancasilaist Character contains challenging assignments to strengthen the basic Pancasila. Shape Your Character is a little survey to check your attitude towards various issues. Power Thought enhances higher order thinking skills (HOTS) which lead the students to be more evaluative, creative, and innovative in any situation. Semester Test is the parameter for the teacher to analyze the students' competence in each semester. Assessment for Minimum Comptence provides exercises for the students' in identifying and solving problems at school and in life. Project of Pancasilaist Graduate's Profile are to implement the values of Pancasila to the students by after learning materials as well as doing activities in the book.