Fun with Mental Math Series Primer to Book 7 is not a set of Mathematics textbooks for teaching as a subject. It is carefully designed and planned to help the pupils to think logically and mathematically. At the same time, pupils discover and enjoy the intrinsic beauty, the patterns and the fun in numbers. The pages in these books should be handled after the relevant concepts have been taught in class. 
The series is graded according to the age and the corresponding level of understanding of the pupils. Class Tests are introduced in every book from Book 1 onwards in order to keep the pupil at a competitive edge