本文选取了新旧两版教材（高中数学人教A版），通过文本分析和比较研
究的方法，分析了这两版教材在三角函数模块的编排结构与知识内容的异同。
在编排结构上，本文分别从教材结构、知识结构两方面进行了对比。研究发
现，新教材在知识的编排顺序上有明显的调整，使三角函数部分的内容更加
系统、连贯。在知识内容方面，本文着重从课程难度和习题难度两个维度进
行了比较。通过比较发现，新教材可以帮助教师更好地引导学生建立知识间
的内在联系，课程难度的整体下调达到减负的效果，充分体现了以人为本的
教育理念，实现提质减负，更有效地培养学生的数学核心素养。基于以上研
究成果，本文为教材的进一步修订和完善以及教师的教学提供了有益的建议。

In this paper, we select old and new textbooks (High School Mathematics
Instruction A Edition) and analyze the similarities and differences between the two
textbooks in terms of the position, structure, and content of knowledge of
trigonometric units through text analysis and comparative research. In terms of
arrangement, this paper compares the structure of teaching materials and the
structure of knowledge. It is found that the new textbook has obvious adjustments
in the order of knowledge arrangement, which makes the content of trigonometric
functions more systematic and coherent. In terms of knowledge content, this paper
focuses on the comparison from two dimensions: course difficulty and exercise
difficulty. Through comparison, it is found that the new textbook can help teachers
better guide students to establish the internal connection between knowledge, and
the overall reduction of course difficulty can achieve the effect of reducing the
burden, which fully reflects the people-oriented education concept, realizes the
improvement of quality and reduces the burden, and more effectively cultivates
students' mathematics core literacy. Based on the above research results, this paper
provides useful suggestions for the further revision and improvement of teachingmaterials and teachers' teaching.