《经济与社会生活》是统编版高中历史教材的选择性必修二，作为选择性必修，本教材在编写上采取现象-影响的叙事逻辑，在内容上对必修教材内容进行衔接和深化。深化的教材内容和课标对学生能力的要求决定了活动课开设的必要性，教材的编写逻辑也为活动课的编写提供了参考。历史活动课要兼具活动课自主探究的特点和历史学科课程的教学目标，以《经济与社会生活》最后设置的以“技术进步与社会生活的变化”为主题的活动课为例，这堂课既要充分尊重学生主体地位，又要重视历史课堂的目的明确、教师统筹、过程评价的特点。同时，由于高中历史活动课程的开展十分有限，存在时间不足、多方力量不支持的问题，教师在统筹时需要转变教学观念，利用好乡土历史资源，把握好课程时间，做好活动反思和示范课设计。以此为指导，本文以重庆地区为例，结合《经济与社会生活》第五单元“交通与社会变迁”的相关内容，设计“技术进步与社会生活的变化”活动课案例，希望为一线教师在进行历史选择性必修活动课设计和实施提供一些切实可行的方案。

The Unified Edition of the high school history curriculum includes an optional obligatory II unit on Economic and Social Life. This textbook, which is required but optional, uses a phenomenon-impact narrative logic in its development and articulates and expands upon the material in the mandatory textbook. The necessity for activity classes is determined by the textbook's enhanced material and the curriculum standards' needs for the students' skills. The textbook's logic also serves as a guide for creating activity courses. Using the activity class on the subject of "technological progress and changes in social life" given at the end of Economy and Social Life as an example, the history activity class should combine the qualities of autonomous inquiry with the teaching objectives of the history curriculum. Not only should this lesson thoroughly respect the students' subjective status, but it should also pay attention to the history class's distinct objectives, teacher coordination, and process evaluation. Teachers must adapt their teaching strategies, make effective use of local history resources, understand the time constraints of the course, and do a good job of reflecting on the activity and developing a model lesson because the high school history activity course is very constrained, there are issues with insufficient time and lack of support from multiple parties, and other factors. In light of this, this article uses the Chongqing region as an example and develops a lesson plan on "Technological Progress and Changes in Social Life" while taking into account the material in Unit 5 of Economic and Social Life, which is titled "Transportation and Social Change." The aim is to provide some practical solutions for front-line teachers in designing and implementing optional compulsory history activity lessons.