Description

The Addition Strip Board with Strips & Tray is a foundational Montessori Mathematics material used to explore addition facts from $1 + 1$ through $9 + 9$. By laying color-coded wooden strips side-by-side on a numbered grid board, children visually and physically construct addition problems, discovering number combinations, commutative properties, and number bonds up to 18 without relying on abstract memorization.Key Benefits & Learning OutcomesVisual Addition & Number Bonds: Replaces mental abstraction with physical measurement, showing how two addends combine to form a single total length on a clear horizontal grid.Exploration of Commutativity: Demonstrates that changing the order of addends yields the same result (e.g., $4 + 3$ and $3 + 4$ occupy the exact same total span on the board).Self-Correction & Error Control: The printed numbers 1 through 18 along the top margin allow children to instantly read the sum at the end of the second strip, enabling completely independent work.Preparation for Abstract Math: Pairs seamlessly with addition record booklets and control charts, bridging concrete sensory manipulation with written mathematical equations.Design & MaterialsIncluded Components:1 Wooden Addition Grid Board: Features a grid 18 squares wide by 11 rows deep, with numbers 1 through 18 printed along the top margin (1–10 in blue, 11–18 in red, separated by a red vertical line after 10).1 Wooden Storage Tray: Contains two full sets of wooden strips:9 Blue Strips (Numbered 1–9): Represent the first addend, with printed numerals at the right end of each strip.9 Red Strips (Numbered 1–9): Represent the second addend, marked with printed numerals and calibrated square divisions.Material: Premium natural hardwood with smooth, non-toxic painted finishes and high-contrast grid lines.Features: Precision-calibrated strip lengths that align perfectly with the grid squares, engineered for durable tabletop practice in classrooms or home learning environments.