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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.
| Brand | Kinderhuis Montessori |
|---|---|
| Minimum age | 5 years |
| Certification | Montessori approved |
Ships within 48 hours · Estimated delivery Sep 19 - Sep 24
US$40
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