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-15%150 years Montessori discount! The discount is already applied.
Using the Addition Strip Board, the child practices the sequence of addition combinations 1–9, and begins the process of memorization of the addition tables. The material is composed of a hardboard chart 12 squares by 18 squares with the numbers 1–18 printed across the top. Stored in a hardwood box are the strips used for the exercise, 9 red strips divided into squares and 9 solid blue strips, both printed with the numerals 1–9.
|Minimum age||5 years|
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