The Checker Board is used for short and long multiplication with the hierarchies in the decimal system up to 100,000,000.
Quality Montessori Materials for Toddler,
Primary and Elementary Since 1993.
E&O Montessori USA.
Quality Montessori Materials for Toddler,
Primary and Elementary Since 1993.
E&O Montessori USA.
US contacts:(905) 313-0530, Fax: (905) 313-0402 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.
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