This series is for the Cambridge International AS & A Level Computer Science syllabus (9618) for examination from 2021. Developed by an experienced author and examiner team and written for the international learner, this coursebook provides students with a structured and progressive guide to the theoretical and practical skills required by the syllabus. With an emphasis on developing computational skills, this resource helps build students'' confidence in using a range of technology and programming languages. Detailed descriptions of concepts are reinforced with exercises, discussion points, and reflection questions with exam-style and past paper questions. Answers are found within the teacher''s resource.