大数据和数字化是当今信息化时代的鲜明特征，人们从数据中获得信息，从数据统计中制定各项指标，还能从数据分析中解决生活中的问题，可以说数据占据了生活中很重要的一部分。数据的分析处理是我们认识世界、阐明事实、解决问题的一个有效方式。 位于人教A版的选择性必修三的第八章成对数据的统计分析中，学生在这章会接触到很多生活中的数据，也会学习很多分析数据的方法解决问题。“一元线性回归模型及其应用”位于成对数据的统计分析的第二节，这节课让学生接触到一个较为简单的统计模型，并学习对有关实际问题进行数据分析检验过程。将单元教学运用到“一元线性回归模型及其应用”的教学设计上，有助于学生对这部分知识的整体理解与应用。 通过文献研究法、访谈法、调查问卷法和案例分析法对“一元线性回归模型及其应用”的教学情况进行调研分析，发现学生学习的困难，为完善教学设计停供思路，以《普通高中数学课程标准（2017年版）》和教科书作为参考，结合单元教学的思想，对该知识进行单元教学设计，让学生在原有的知识体系中主动构建新的知识体系。 从课标分析、教材分析、学情分析、单元教学目标的设定、单元教学评价和单元测试题的设计这六个方面对“一元线性回归模型及其应用”单元教学进行整体分析。单元教学设计过程中采用了逆向教学设计、问题串式教学、基于情景的教学设计和信息技术与数学教学相融合的教学设计四个教学设计策略对“一元线性回归模型及其应用”进行课时教学设计。教学研究创新之处在于在教学设计设施前，对该课程的困难导向、学生学习情况做了相关调查，设计了单元教学设计以及评价设计；不足之处是收集的样本不够大，数据资料具有局限性，教学经验不足可能导致教学设计研究有较多的缺陷。

Big data and digitalization are distinctive features of the current information age. People obtain information from data, formulate various indicators from data statistics, and solve life problems through data analysis. Data plays a significant role in our lives. Analyzing and processing data is an effective way for us to understand the world, clarify facts, and solve problems. In Chapter 8 of the selective compulsory module three of the People's Education Edition A, students will encounter many real-life data and learn various methods to analyze data to solve problems. "Simple Linear Regression Model and Its Application" is located in the second section of statistical analysis of paired data. This lesson introduces students to a relatively simple statistical model and teaches them the process of analyzing data related to practical issues. Applying unit teaching to the instructional design of "Simple Linear Regression Model and Its Application" helps students to have a comprehensive understanding and application of this knowledge. By using literature research method, interview method, survey questionnaire method, and case analysis method to conduct research and analysis on the teaching situation of "Simple Linear Regression Model and Its Application," learning difficulties faced by students were identified. This provided insights to improve instructional design. Referring to the "General High School Mathematics Curriculum Standard (2017 Edition)" and textbooks, along with the unit teaching concept, the knowledge was designed for unit teaching, allowing students to actively construct new knowledge within their existing knowledge system. For the research on the unit teaching design of "Simple Linear Regression Model and Its Application," an overall analysis of the unit teaching from six aspects - curriculum analysis, textbook analysis, student analysis, setting of unit teaching goals, design of unit teaching evaluation, and design of unit tests was conducted. The unit teaching design process utilized four instructi.