What is a Montessori Rainbow Ring Stacker?

What Is a Montessori Rainbow Ring Stacker? A Parent’s Complete Guide Home  ›  Blog  ›  What Is a Montessori Rainbow Ring Stacker? What Is a Montessori Rainbow Ring Stacker? A Parent’s Complete Guide A baby sees a tower of brightly colored rings. One ring comes off. Then another. The pieces get scattered across the floor, […]