The shallowest of the A5 card boxes, 18,8 x 6,6 x 7,5/9,3 cm. That second pair of numbers is the box itself: the front wall is lower than the back, so the top card can be read and lifted out without tipping the whole stack forward. Small here means depth rather than footprint, so this one suits a single short set of cards rather than a term's worth of them. The medium A5 box, 8,8 cm deep, is a separate item, and so are the cards.
“Children display a universal love of mathematics, which is par excellence the science of precision, order, and intelligence.”
In Montessori sensorial education, the prepared environment is fundamental to the child's self-construction.
This storage box embodies the principle of external order supporting internal order. Dr. Montessori observed that children aged 3-6 are in a sensitive period for order, finding deep satisfaction in organizing their environment. The precision-crafted box with its finger joints demonstrates care and beauty, communicating respect for the child's work. The smooth bamboo interior protects materials while providing sensorial feedback through texture and natural warmth. By housing activity cards in this dedicated space, we honor the child's need for consistency and predictability, enabling independent access to extensions and variations of sensorial work. This supports the development of executive function as children learn to plan, retrieve, and return materials systematically.


Follow the Montessori method of presentation for optimal child development.
Place the box on a low shelf at child's eye level. Organize activity cards by sensorial area (visual, tactile, auditory, etc.) with clear dividers. Ensure cards are oriented consistently with images facing forward.
Demonstrate carrying the box with two hands to a work mat
Show how to open the lid gently and place it beside the box
Select one activity card using a three-finger grip
Close the box and return it to the shelf before beginning the activity

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Since 1929

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Supports the child's sensitive period for order by providing a designated place for activity cards.
Develops care of environment through proper material storage and handling.
Rotate activity cards seasonally to maintain interest while keeping the system predictable
Everything you need to know about this material.
Contact Our ExpertsThis storage box is specifically designed to hold A5-sized activity cards (148 x 210 mm or 5.8 x 8.3 inches), which are commonly used for Montessori sensorial exercises and three-part card lessons.
The box can comfortably store approximately 50-75 A5 activity cards, depending on the thickness of your cardstock. The bamboo interior provides smooth sliding action to prevent cards from catching or bending.
Yes, the durable wooden construction with precise finger joints makes this box ideal for daily classroom use. The smooth finish and rounded edges ensure safe handling by young children while maintaining the aesthetic appeal of the Montessori environment.
While designed for A5 activity cards, this versatile box can also store nomenclature cards, command cards, reading strips, or other flat educational materials that fit within the A5 dimensions, supporting various areas of the Montessori curriculum.
The box promotes order and independence by providing a designated place for materials. Its natural wood construction connects children with nature, while the quality craftsmanship demonstrates care for the environment and teaches respect for materials through proper storage.
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