Mathematics Topical Guide is a series of four books especially written for students taking the O level Mathmatics syllabus 4048. It is essential for students to acquire and apply mathematics concepts and skills for progressive learning and to support learning in other subjects as wll. When students develop their cognitive and metacongnitice skills through mathematical problem solving, they would be able to ahcieve a desirable level of mastery in mathematical concepts. This would progressively bulid their confidence and foster interest in the subject . In addition, Apolication and modelling connect concepts to real-world situations.Through mathematical modelling, students solve problems in real-world contexts and reflect on the solution before interpreting it. In this series, the topics anr classified into individual lessions to cater to the learning needs of the students a the respective level. A handy and comprehensive guide to complement th learning o mathematical concepts, each topic comprises the following features.