【摘要】 “化工原理”课程是化工及相关专业的专业基础课程，相关专业的学时少，课程难，需重点解决的问题是“三多”“三不愿”“三不明”。针对痛点问题，提出了线上线下混合式循环互助的创新设计思路，包括：教师帮助学生自制课前、课中、课后习题，学生帮助教师反馈真实学习情况，学生帮助学生组团互助学习。问卷调查和评教结果显示，在一定程度上解决了“三多”“三不愿”的问题；通过建立“助教团队”反馈不同层次学生的学习情况，较好地解决了“三不明”的问题。学生的成绩与教改前相比有明显提高。更多还原

【Abstract】 The principles of chemical engineering is the basic course of chemical engineering and related majors. It has less class hours and is more difficult than related majors, and the key problems should to be solved in this course are “three many” “three unwilling” and “three unknown”. To solve these problems, an innovative design idea of online and offline, cyclic and assistance mode was proposed. It included: teachers helped students make their own exercises before, during and after class, students helped teachers feedback the real learning situation, and students helped students form groups to learn. The results of questionnaire survey and teaching evaluation showed that the problems of “three many” and “three unwilling” were solved to a certain extent. Through the establishment of a “teaching assistant team” to feedback the learning of students at different levels, the problem of “three unknown” was solved. The results showed the students’ scores were significantly improved compared with those before the teaching reform.更多还原