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We placed a large order for Montessori materials from Adena Montessori. Watch us unbox it all and judge the quality close up for yourself. I have purchased from Adena many times and have always been satisfied with their products. On the rare occasion something is amiss, they have been quick to correct it.
These are most of the materials we needed to purchase for ages 7-9 to study mathematics, fractions, and geometry. The rest of what we need we either already had, or I will make DIY versions.