Catherine Jones is an experienced Head of Physics and author, having written a student book for AQA GCSE Science Entry Level Certificate, teacher handbooks for OCR Gateway GCSE Sciences, and many digital resources for A Level and GCSE Physics. Dr Andrew Chandler-Grevatt has a PhD in school assessment and is a Senior Lecturer in Science Education at the University of Brighton. Andy has written two Oxford Teaching Guides and developed the assessment model used throughout Activate and AQA Activate for KS3 Science and our GCSE Science courses.