DANNI Montessori Addition Subtraction Strip Board Preschool Childhood Math Toy Early Educational Math Calculation Learn Teaching Aids

Red, blue digital bar 1-9 digits, used for the calculation of addition and subtraction numbers on the addition and subtraction board, the grid on the addition and subtraction board, a grid representing 1, the number of wooden strips and the bottom of the digital grid Correspondence, making it easier for children to understand and perform calculations. Addition: The superposition of two numbers, using a digital bar placed on the backplane, connecting two digital bars, such as 6+3=? The two positive connections allow the child to count the number of grids to get the answer. Subtraction: subtract the two numbers, remove the latter number from the former number, and how much is left, use the grid to count the number, let the children learn more easily, such as 13-8=? Since the product is made of wood, it is strictly forbidden to soak in water. You can wipe it with a soft cloth., Manufacturer: DANNI