If you are looking to understand the "Examiner's Mind," the most direct and legal path is to download the directly from your specific exam board's website (e.g., CAIE, Edexcel).

: A 242-page guide containing concise notes and actual exam questions. Psychology of Math Examination Design

: Comprehensive preparation for final examinations, including specific volumes for Grade 12. Additional Mathematics

Join reputable student forums (like Reddit’s r/GCSE or local curriculum Facebook groups). While they cannot legally host the PDF, members often share derived from the book which are free to use.

If you want, I can:

: Includes practice questions at the end of each topic and "Understanding Rate Tables" to help students track their progress. Visual Aids

: Multiple volumes, including Mathematics Grade 12 and Grade 5-7 editions , are available for viewing and download with a subscription.