This text purpose introducing the mathematics textbook (grade 7 ~ 9) of new century edition and analyzing the textbook of volume 1 of grade 7 in detail.

本文对新世纪(版)数学7 ~ 9年级教材进行了总体介绍，并对7年级上册教材进行了分析。

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This text purpose analyzing the mathematics textbook (volume 1, grade 2) of new century edition.

本文对新世纪（版）数学二年级上册教材进行了分析。

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This paper makes some supplement for the error in demonstrating the relations between two curve line integrals in the textbook advanced mathematics (edited by Tongji university 4th edition).

对教材《高等数学》（同济大学数学教研室主编，第四版）中关于两类平面曲线积分关系证明中的一处疏漏给出补充证明。

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