Math matrix key is remarkable and effective learning root. It provides all operations of basic maths addition, subtraction, division, multiplication.
Key Features: Self-correcting ,Can be used over and over again, Meets educational standards.
Items Included in Package:1 piece math-matrix key, 40 math-matrix combination cards.
* Request to return must be raised within 7 calendar days of delivery of the product. For further details click here.
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