This books helps children (age 4 - 6 yrs) understand numbers and their significance. Representation of numbers on Abacus is explained. Teachers/Parents can teach numbers and basic addition & subtraction with detailed instructions given in the book. A must for every child to initiate learning of numbers.
Fermat's Equation by Nilaish
Mathematics, which beats anything by Shubhankar Paul
Dream World by Gaurav Manik
Introduction to Maths with Abacus - 2 by SEEMA RANA