Article
蘇聯對於兒童教育法 - Method of Children's Education in the Soviet Union

Column title: 兒童 - Children
Subject matters: 文章 - essay,
Language level: Mixed

Keywords: children, educational methods, Soviet Union,

Persons:
天真 Tianzhen (Author)

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Article
廢物利用 - Use of Waste Material

Column title: 兒童 - Children
Subject matters: 新知 - new knowledge,
Language level: Mixed

Keywords: practical instruction ,

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