Geometric Solids: Ten 3D Forms for Tactile Shape Exploration

Price

€155.73

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Shipping & Delivery

In Stock · 2-3 days

Quantity

Age Range3-6 Years

MaterialPainted wood with smooth finish

DimensionsApprox. 30 × 20 × 10 cm

CertificationAMI Approved

About

The Geometric Solids introduce children to three-dimensional forms through tactile exploration. This essential Sensorial material features ten distinct geometric shapes in a vibrant blue finish, so that children discover relationships between 2D and 3D forms while developing stereognostic sense and mathematical vocabulary.

“The hands are the instruments of man's intelligence.”

- Maria MontessoriThe Absorbent Mind

AMI ApprovedOfficial Nienhuis

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Everything You Need

CubeBlue painted wood

SphereWith clear stand

CylinderBlue painted wood

ConeBlue painted wood

Rectangular PrismBlue painted wood

Triangular PrismBlue painted wood

Square-Based PyramidBlue painted wood

Triangular-Based PyramidBlue painted wood

OvoidWith clear stand

EllipsoidWith clear stand

The Montessori Method

The Geometric Solids embody Dr. Montessori's principle that the hand is the instrument of the mind. Through tactile exploration of these three-dimensional forms, children build concrete experiences that later support abstract mathematical understanding. This material bridges the gap between the child's sensorial experiences and mathematical concepts, allowing them to absorb the essential qualities of each solid through touch before they can name or define them. The stereognostic sense - the ability to recognize forms through touch alone - is refined as children explore these shapes with closed eyes, creating mental impressions that become the foundation for geometry. This work satisfies the child's need for order and classification while preparing the mathematical mind through concrete manipulation of perfect geometric forms.

✹Development of stereognostic sense through tactile discrimination✹Recognition and naming of ten fundamental geometric solids✹Understanding relationships between 2D shapes and 3D forms✹Refinement of visual and tactile perception✹Preparation for mathematical concepts including volume, surface area, and spatial relationships

Geometric Solids: Ten 3D Forms for Tactile Shape Exploration - Child learning

AMI Approved

Activity Guide

Step by Step to Mastery

6 steps to mastery

Model slow, deliberate movements to emphasize the weight and form of each solid

Use minimal language initially - let the hands discover

Trace edges and count faces silently to maintain focus on sensorial experience

Place contrasting solids in child's hands simultaneously for comparison

Start with most contrasting shapes (sphere and cube) before subtle differences

Use precise mathematical language

'cone,' not 'ice cream shape'

Use precise mathematical language: 'cone,' not 'ice cream shape'

Browse steps

Model slow, deliberate movements to emphasize the weight and form of each solid

Use minimal language initially - let the hands discover

Trace edges and count faces silently to maintain focus on sensorial experience

Place contrasting solids in child's hands simultaneously for comparison

Start with most contrasting shapes (sphere and cube) before subtle differences

Use precise mathematical language

'cone,' not 'ice cream shape'

Use precise mathematical language: 'cone,' not 'ice cream shape'

Developmental Benefits

Why Educators Choose This

Stereognostic Sense

Children develop the ability to recognize forms through touch, building neural pathways for spatial understanding.

Mathematical Foundation

Direct preparation for geometry by experiencing 3D forms that correspond to their 2D representations.

Language Development

Introduces precise geometric vocabulary through concrete, manipulable objects that children can explore.

Visual Discrimination

Refines the ability to perceive subtle differences in form, preparing for later mathematical concepts.

Always handle solids with both hands to model their three-dimensional nature and weight

Maintain silence during initial explorations - language comes after sensorial experience

Observe which solids attract each child and note readiness for related materials like the Geometric Cabinet

Pro Tip

“Present solids in order of contrast: sphere, cube, ovoid, ellipsoid, cylinder, cone, triangular prism, square-based pyramid, triangular-based pyramid, rectangular prism”

The Gold Standard in Montessori

Every Child Is a Little Creator

Heritage

Since 1929

Brands used by

schools worldwide

European brands

AMI

Endorsed

Have Questions?

Frequently Asked Questions

Everything you need to know about this material.

Contact Our Experts

What geometric shapes are included in this set?

The set includes 10 geometric solids: sphere, cube, cylinder, cone, triangular prism, rectangular prism, ovoid, ellipsoid, triangular pyramid, and square pyramid. Each solid is crafted with smooth surfaces and precise dimensions for optimal tactile exploration.

How do children use the Geometric Solids in Montessori activities?

Children explore the solids through touch with eyes closed to develop stereognostic sense, match them to corresponding 2D base cards, sort by properties like curved vs. straight surfaces, and learn mathematical vocabulary. Activities progress from simple exploration to complex classification and comparison exercises.

What skills do children develop with this material?

Children develop stereognostic sense (recognizing forms through touch), visual discrimination, mathematical vocabulary, spatial reasoning, and preparation for geometry. The material also enhances fine motor control, concentration, and establishes connections between 2D and 3D forms.

At what age should children start using the Geometric Solids?

Typically introduced around age 3.5-4, after children have worked with other sensorial materials like the Pink Tower and Brown Stair. The child should demonstrate good motor control and ability to concentrate. The material remains engaging through age 6 as children discover more complex relationships.

Are the solids made of wood and why are they blue?

Yes, the solids are crafted from high-quality wood with a smooth, vibrant blue finish. The blue color is traditional in Montessori materials as it provides visual consistency while allowing children to focus on the forms themselves rather than being distracted by varying colors or wood grains.

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