Checkpoint Science Challenge Workbook 8 provides targeted additional exercises that aim to stretch students to develop deeper knowledge and understanding, and to further refine their scientific skills. Using an active-learning approach the workbook aims to encourage and motivate students and promote scientific enquiry. Written by well-respected authors, the Cambridge Checkpoint Science suite provides a comprehensive, structured resource which covers the full Cambridge Secondary 1 framework and seamlessly progresses into the next stage. Checkpoint Science Challenge Workbook 8 provides targeted additional exercises that aim to stretch students to develop deeper knowledge and understanding, and to further refine their scientific skills. Using an active-learning approach the workbook aims to encourage and motivate students and promote scientific enquiry.