The Subtraction Strip Board provides an excellent visual lesson in subtraction through the use of its numbered red and blue strips and unnumbered natural wood strips. The set includes a board with a grid of eighteen columns and ten rows which is used along with the strips to show the difference when one number is subtracted from another. The board measures 41 x 25 cm while the strips are 2 cm wide and of varying lengths. The set comes with two lidded boxes for storage. This set can be used in conjunction with the Subtraction Booklets. Learn more about how to use the Subtraction Strip Board at InfoMontessori.
All Gonzagarredi products are approved by the Association Montessori Internationale (AMI).