There are sets of chains representing each number. They can be used for counting, number order, skip counting, learning about squares and cubes as well as many other things. The best thing about them is their tactile nature. Little tags also accompany the numbers for marking the numerical equivalent of the chains.
Here is a description from a mom who went to the parents Montessori Maths night at her school.
I was able to order my beads through Bolek’s Crafts, as recommended on Montessori at Home. Here this crafty mom shows her process of making her own set of Bead Chains. I have all the materials I need now, and soon I’ll have the time to start, as this is definitely a labour of love. Once I get started I’m sure I’ll be able to work on the chains while doing something else at the same time. This is the guide that I will follow as I make mine.
Montessori at Home has five parts to her blog where she describes her journey in making these chains. Here they are: Part 1, Part 2, Part 3, Part 4, Part 5
I'm excited to use these in my sessions and with other programs within Momentum Learning Centre. I will definitely post pictures as I create them and when they are in action!