О контрольных работах в 9 классах
Каминская Ю.А. рассказывает о организации контрольных работ для 9 классов в мае 2021 года
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![[Допсем] Математическая статистика. Подготовка к первой контрольной](https://sun9-32.userapi.com/VzeqNu6-Zpl-YYCSyR2Vk_Jbp8yFzUQ-KGvVyA/_lZNhM88zY8.jpg)
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