A brilliant introduction to numerical values, our edx education® Place Value Abacus is an engaging way for children to learn and identify with mathematical concepts in a hands on and visual way.. Set includes: 3 stands, 9 rods, 81 abacus beads 90 x 19mm. 9 sets of 0-9 number tiles.. Size LxWxH: 20cm x 16.2cm x 8.2cm. Age: 5yrs+. MPN: EDX26102C