Gareth Cole & Joe Petran 
TGAU CBAC Canllaw Adolygu Mathemateg Uwch (WJEC GCSE Maths Higher: Mastering Mathematics Revision Guide Welsh-language edition) [EPUB ebook] 

Exam Board: WJEC
Level: GCSE
Subject: Mathematics
First Teaching: September 2015
First Exam: June 2017
Welsh language edition.
Maximise your students“ grade potential with a step-by-step approach that builds confidence through topic summaries, worked examples and exam style questions.
– Identify areas of improvement to focus on through diagnostic tests for each topic.
– Develop exam skills and techniques with skills-focused exam-style questions and exam advice on common pitfalls.
– Build understanding and confidence with clear explanations of each topic covering all the key information needed to succeed.
– Consolidate revision with “two weeks to go“ summaries for each topic.