concept of zeroAdd To Zero Practice Sessions
each display of number is basically addition. no beads touching the beam is zero.when u move the beads, it adds to the running total
Bar 1
Add 1 digit number
Till Bar 2
Add 2 digit number
Till Bar 3
Add 3 digit number
Till Bar 4
Add 4 digit number
Till Bar 5
Add 5 digit number
Till Bar 6
Add 6 digit number
Till Bar 7
Add 7 digit number
Till Bar 8
Add 8 digit number
Till Bar 9
Add 9 digit number