Subtraction Strip Board

Subtraction Strip Board helps children understand basic subtraction and prepares them for more abstract mathematics. The set contains a wooden board with 12 by 18 squares and numerals 1-18 printed across the top, a wooden box with 9 red wooden strips and 9 blue wooden strips of varying lengths printed with numerals 1-9, and a wooden box with 18 natural finished wooden strips of varying lengths.

Educational Purpose:
Develops concrete understanding of subtraction facts and supports the transition toward more abstract arithmetic.

Activity:
Children arrange the colored and natural-finished strips on the board to model subtraction combinations and observe numerical relationships.

Set Includes:
• 1 Wooden Board, 12 × 18 Squares, with Numerals 1-18
• 9 Red Wooden Strips Numbered 1-9
• 9 Blue Wooden Strips Numbered 1-9
• 18 Natural Finished Wooden Strips
• 2 Wooden Storage Boxes

Age: 3-6
Safety Testing: CPSIA HR4040 and ASTM F963, tested by a CPSC-accredited laboratory.

At Montessori Outlet, every product is inspected before shipping to ensure customer satisfaction. Returns or exchanges are accepted within 30 days of delivery under two categories: 

Category A: Manufacturer Defects & Shipping Damages

If items arrive damaged, defective, missing, or incorrect, contact us within 30 days for replacement. Montessori Outlet covers replacement shipping. Photos may be required for claims.

Category B: Personal Preferences.

Books are non-returnable. For returns due to personal choice, a 15% restocking fee and return shipping costs apply;  original shipping is non-refundable. Furniture returns follow manufacturer policies with a 20% restocking fee for resalable items and no returns if assembled or damaged.

After 30 days, all sales are final.