Montessori Math Teaching System: Montessori addition & subtraction arithmetic board, perfectly matching professional Montessori mathematics enlightenment curriculum. Intuitively turn abstract addition and subtraction operations into tangible visual games, help kids easily understand number relationships, arithmetic logic and number composition Adopt international universal Montessori color matching: red strips for addition, blue strips for subtraction, natural wood number bars. Clear dividing red line on the board, orderly arranged 1-18 digital grids, let children quickly distinguish operation rules, master number decomposition, combination and simple arithmetic calculation Premium Natural Beech Solid Wood Safe Craft: Whole set made of high-quality natural beech wood, finely polished without burrs, smooth rounded edges and corners. Non-toxic environmentally friendly printing paint, bright color and never fade Complete Full-set Arithmetic Learning Combination: Include dedicated addition board, subtraction board, matching red & blue number strips + wooden storage boxes. Independent classified storage slots, easy to sort and store accessories, keep desktop tidy. Large-size operation panel, convenient for little hands to place and match number bars independently Multi-scene Arithmetic Enlightenment Early Education Toy: Ideal for preschool number cognition, addition & subtraction calculation practice, number logical thinking training. Widely used in Montessori schools, kindergarten math classes, family homeschool parent-child interactive learning. Effectively cultivate children's math interest, concentration and logical reasoning ability