Plastic Abacus Arithmetic Abacus Kids Calculation Tool 17 digits, Soroban School Math Learning Tool Podazz
Abacus style abacus, plastic frame, 17 digits. A bead above and four beads below give a concrete visual representation of numbers by beads.A very useful tool in general mathematics education. The abacus also called a counting frame, is a calculating tool where beads are moved down and be carried out...