Shipped directly from China. Standard shipments typically take 20-70 days to arrive after payment（according to different country） If you have any questions, please contact our customer service staff. service_china@adenamontessori.com
Adena Montessori
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4 sets of color-coded unit addition combinations (equations) slips.
1 set of combinations for each of the 4 Addition Working Charts.
Each set supplied in a separate plastic box.
