The Checker Board is used for short and long multiplication with the hierarchies in the decimal system up to 100,000,000.
(905) 313-0530 Fax: (905) 313-0402 E-mail: montessori1907@gmail.com
(905) 313-0530 Fax: (905) 313-0402 E-mail: montessori1907@gmail.com
The Checker Board is used for short and long multiplication with the hierarchies in the decimal system up to 100,000,000.
Reviews for Checker Board