This book is very scientific and easy for the children to understand and memorise multiplication table. All the tables are sum-up to three small tables which can be memorised very easily. Things are produced in a scientific and new way. It's more a research work than a book by the author. Children need to momorise 3 small tables only. Clear instructions are given to the teachers for proper teaching method in a practical way. A must buy for all English medium students not only in India but also in abroad . Price is also affordable.