《平均数》这部分内容是一节概念学习课,在教学中要设计认知冲突,打破学生的认知平衡,诱发学生产生使用平均数的需要。笔者创造性地使用教材情境,巧妙设计认知冲突,激发了学生探索平均数的意义和计算方法。在生生交流、师生互动的过程中,实现了对平均数的认识逐步走向深入,收到了较好的教学效果。 “Average” This part is a concept of learning class, teaching in the design of cognitive conflicts, to break the cognitive balance of students, induce students to use the average need. The author creatively uses the teaching material situation, cleverly designs the cognitive conflict, stimulates the student to explore the meaning of the average and the calculation method. In the process of student-student interaction and interaction between teachers and students, the awareness of the average was gradually deepened and better teaching effects were received.