On abacus with lot of games and puzzles to make the learning interesting. After introducing concepts of numbers up to 50, simple addition and subtraction concepts are explained with practice sums. Later combinations in the easy format are explained clearly defining the tricky problems separately. This ensures if the child is not getting these problems - it is no big deal, the understanding will come over a period of time - this saves anxiety on part of parents.

In the other two books various combination from +/-9 to +/-1 and integrated combinations have been explained with solved examples. Tricky sums have been clearly marked. At the end of the series children will be able to perform all kinds of addition/subtraction sums up to five, two digits numbers. Mental calculations are integrated from the beginning and that will make imaging skills of the young ones sharp and will aid right brain activation abacus market url.

Useful material to initiate students in maths and proper understanding of numbers. Recommended for personal use and in primary schools.The author is a motivational speaker on parenting, success coaching and on mental maths. The author gives free counseling on parenting issues and other performance issues related to children and parents, you can mail your queries.The soroban is an abacus developed in Japan (generally referred to as a Japanese abacus).

It is derived from the suanpan, imported from China to Japan around 1600. The soroban consists of an odd number of columns or rods, each having beads: one bead having a worth of 5 (referred to as heaven beads) and 4 beads each having a value of 1 (referred to as earth beads). Each set of beads of every rod is split by a bar often called a reckoning bar. The quantity and size of beads in each rod make a standard-sized thirteen-rod soroban much less cumbersome than a typical abacus.

The number of rods in a soroban is always odd and never lower than nine. Basic models normally have 13 rods, however the number of rods common models will have often will increase to 21, 23, 27 and even 31, thus permitting calculation of extra numbers. Each rod represents a digit, and a bigger number of rods permits the representation of more numbers.The beads and rods are manufactured from a wide range of different materials.