Abacus

On 10 arches colored wooden beads can be moved as a visual help for calculating. 55 addition
tasks on one side and 55 subtraction tasks on the other side of the wooden base are shown and can quickly be solved with the help of the wooden beads! A challenge for all small math whizzes! On 10 arches colored wooden beads can be moved as a visual help for calculating. 55 addition tasks on one side and 55 subtraction tasks on the other side of the wooden base are shown and can quickly be solved with the help of the wooden beads! A challenge for all small math whizzes!