To use the online abacus, simply drag the beads across the rods from left to right or right to left. Students can represent larger numbers by assigning each rod a place value. For example, the dark purple beads represent the one’s place, lavender the 10s place, the blue represents the hundreds place, sky blue represents the thousands place, etc. Students can represent numbers using the different place values and then perform operations. Alternatively, simply have students represent each addend with a different color., To use the online abacus, simply drag the beads across the rods from left to right or right to left. Students can represent larger numbers by assigning each rod a place value. For example, the dark purple beads represent the one’s place, lavender the 10s place, the blue represents the hundreds place, sky blue represents the thousands place , Wizycom AbacusMaster is the World’s most trusted and leading provider of quality Abacus Education, having learning centres and students across the Globe. The brand provides learning portal, Abacus training, online classes, teacher training and other after-school programs for kids..