Description
Key Purposes & Benefits
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Advanced Hand-Eye Coordination: Unlike the Imbucare boxes where the hole is large and the box catches the object, this requires the Child to align a small hole in the cube with a narrow dowel.
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Refining the Voluntary Release: The Child must not only let go of the cube but do so only once it has been successfully threaded onto the dowel.
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Wrist Stability: To stack the cubes, the Child must hold their hand steady in space, which builds the internal stability of the arm and wrist.
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Mathematical Foundation: While the child is playing, they are experiencing the early concept of 1-to-1 correspondence and counting (1, 2, 3).
How it is Used
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Presentation: The adult slowly lifts a cube, positions it over the dowel, and lets it slide down. The “clink” as it hits the base provides satisfying auditory feedback.
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The Effort: The child attempts to mimic this. You will often see a toddler using their “helping hand” to steady the base while the “dominant hand” tries to find the top of the dowel with the hole in the cube.
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Completion: The activity is finished when all three cubes are stacked. The child then removes them one by one to start over.
Why “3” Cubes?
Montessori materials are intentionally limited. Three cubes are used because:
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Manageable Challenge: It is enough to provide a sense of a “beginning, middle, and end” without being so many that the Child loses interest or becomes overwhelmed.
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Pattern Recognition: Three is the minimum number required to create a vertical sequence or pattern.
The Stacking Sequence
In a Montessori classroom, the vertical dowel activities progress in difficulty based on the shape of the object being stacked:
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Discs on Vertical Dowel: (Easiest) The circular hole is easy to see and the disc is easy to grasp.
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Cubes on Vertical Dowel: (Intermediate) The flat sides of the cube make it slightly heavier and bulkier to handle.
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Horizontal Dowel: (Advanced) The child must rotate their wrist 90 degrees to thread a ring onto a peg pointing sideways.
It is made from birchply and solid beechwood.
Objectives of the 3 Cubes on Vertical Dowel
- promotes development of concentration
- improves hand-eye coordination
- strengthens finger dexterity
- builds fine motor muscles
Dimensions
13 x 13 x 13 cm / (5″ x 5″ x 5″)
Related Products
Further Reading and Resources
- How to Improve Your Child’s Hand-Eye Coordination by Bellamy’s Organics











Noleen Clarke (verified owner) –
Montessori equipment so well thought out for little hands. The cubes perfect size and cannot be swallowed.
My little girl has already mastered pulling cubes off. Excellent for hand and eye co-ordination and beginning of pincer grip.
Rheome van Rensburg (verified owner) –
I love the simplicity. This is authentic Montessori.
Violet D (verified owner) –
The toddler items from Childrens House are exceptional.