The Geometry Cabinet is one of the centrepieces of the Montessori environment. The set consists of a cabinet with seven pull-out trays on metal glide rails for easy insertion and removal. Six of the trays have six frames and insets of various geometric shapes, while the seventh tray (aka The Demonstration Tray) has three insets and three blank frames along with a removable natural wood frame. Each frame measures 14 cm square and is white with a red inset shape. The insets have wooden knobs for easy grasping. The cabinet measures 47 cm x 32 cm x 23 cm.
Also included is the complete set of Cards for the Geometry Cabinet, which consists of three sets of thirty-six cards (108 cards in total) with the shapes of the Geometry Cabinet in thin line, thick line and solid shapes in red on a white background to match the Geometry Cabinet insets. The cards come in a divided box for storage.
All Gonzagarredi materials are approved by the Association Montessori Internationale (AMI).