One Golden Bead Square Of 100: Individual Beads Nylon

One golden bead square of 100 makes the hundred something a child can pick up: ten ten-bars joined into a single flat square of nylon beads. Counting the beads along one edge and then along the other shows that ten tens and one hundred are the same quantity seen two ways, which is the check the child can make alone. It is used to exchange ten tens for one hundred and to build the sequence of unit, ten, hundred and thousand on which the decimal system rests. A single square for completing or extending a set already in use, from about three years.