The Subtraction Working Charts aid the child in practice and memorization of the subtraction combinations. Includes a control chart, two working charts and a box of wooden answer chips.
Note: GAM Gonzagarredi Montessori materials are not an economy brand. The products are manufactured in such a way so they can endure daily use for many years in childcare, home-learning, and school environments.
These products are produced in company owned factories with the commitment of high-grade craftsmanship, sustainability, and environmental and social responsibility. The products are made of sustainable raw materials, such as wood from planted European forests and water-based inks and paints, and meet the demands of various rigorous safety regulations, including EN71 and ASTM.
Please note that Montessori materials are not toys, but educational, teaching materials. They are designed to be used under the supervision of professionally trained adults in a school environment. Please always use these products under supervision to ensure they are used correctly and safely. Some of the Montessori materials and tools may contain swallowable, small, rough, pointed, or other elements that can cause injury or damage if used improperly.
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