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applied problems. (1) |
cross-curricular relations; (1) |
integration of learning; (1) |
mathematics; (1) |
younger schoolchildren; (1) |
интеграция обучения; (1) |
математика; (1) |
межпредметные связи; (1) |
младшие школьники; (1) |
молодші школярі; (1) |