Special features for books are’ child-friendly and infused with interest and enjoyment, the series uses a progressive approach to introduce new concepts and reinforce them through all the levels, chapter opener to arouse pupils’ curiosity of the contents of the chapter, recap for pupils to recall learnt concepts, in focus for pupils to discuss questions related to various learning objectives, let’s learn for the introduction of new concepts through the concrete-pictorial-abstract approach, activity time (we work together, play a game!, it’s fun) to allow pupils to develop requisite skills, knowledge and attitudes with the inclusion of learning experiences, practice for immediate evaluation of pupils’ learning, mind workout to encourage pupils to apply learnt concepts to solve non-routine questions, maths journal for pupils to reflect on their learning process and self check for pupils to keep track of their own learning progress.