It’s not a teaching material, but it’s a great activity! Montessori-inspired work using an accordion card holder

A simple Montessori-style activity you can do at home to satisfy your child’s “I want to try!” moment

── Idea for Using Accordion Card Holder
Have you ever seen your child pulling cards out of your wallet and playing seriously? You might say “Stop that!”, but the level of focus can be impressive.

This behavior actually reflects what Montessori education calls a “sensitive period” for order and movement—when children are drawn to repetition, sequences, and using their fingers.

You can easily fulfill that desire with something as simple as an accordion card holder.

Just gather some unused cards (like old point or clinic cards) and let your child use them. Taking out and inserting cards one by one becomes a meaningful activity.

They may cry or get frustrated at first—but that’s a part of learning. Through trial and error, they’ll develop control of their hands and eventually feel the joy of “I did it!”

I’m also introducing an accordion-style card case that worked well at home—feel free to check it out!

This item is also used in the Montessori classroom I run in Tokyo. It’s one of the children’s favorite activities.
https://bambi-no.net/kodomonoie/