Shichida Method 100-Bead Abacus Includes the abacus itself, a box, and a paper board. ○ Mastering Numbers Up to 100 By moving the beads and counting, children can deepen their understanding of numbers up to 100. ○ Basic Concepts By moving the beads, children can learn basic concepts such as up and down, left and right, long and short, more and less, and large and small. ○ Addition and Subtraction Recognition By moving the beads to perform addition and subtraction, children can learn to recognize addition and subtraction. ※ Quoted from the Shichida Method website