Generic Montessori Subtraction Strip Board  (Multicolor)

Montessori Subtraction Strip Board Children use the Subtraction Strip Board by selecting subtraction combinations of one through eighteen, thus reinforcing the child's comprehension of subtraction tables.|We provide 30 Day money return guarantee, as long as you find the purchased item is different from our listed description and condition. Wooden board 12 squares by 18 squares with the numerals 1-18 printed across the top.A wooden box contains 9 red wooden strips and 9 blue wooden strips both printed with the numerals 1 to 9 and 18 natural wooden strips of varying lengths.