The paper expounds the teaching method of "Tree Diagram" and its basic modes.

文章阐述了“树形图”的教学方式及其基本形式。

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Part four: The study of teaching application of three modes in Shizhu.

第四部分：石柱县三种模式的教学应用研究。

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Part two: The modes, operation procedure and characters of three-dimensional teaching method.

第二部分：三维教学法的模式、操作程序和特点。

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Part two: The modes, operation procedure and characters of three-dimensional teaching method.

第二部分：三维教学法的模式、操作程序和特点。

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