Stage 9 is endorsed by Cambridge Assessment International Education.Practise and consolidate knowledge gained from the Student''s Book with this, write-in workbook full of corresponding learning activities.Practise and consolidate knowledge gained from the Student''s Book with this, write-in workbook full of corresponding learning activities. - Save time when planning with ready-made homework or extension exercises.- Reinforce student''s understanding of key scientific concepts with varied question types, quizzes and the use of ICT.- Challenge learners with extra practice activities to encourage regular self-assessment.