Material: EVA (EVA is degradable!) It is an improved environmentally friendly plastic material that is soft, corrosion resistant, highly heat resistant and environmentally resistant. )
Including: as shown
Theory: Montessori
Effect: Training basic logic. The number understands the geometry, the perimeter of the area, understands. Pythagorean's theorem

7 colors, 7 shapes, writing the world, giving full play to your child's imagination