“尝试指导·效果回授法”是上海市清浦县“顾泠沅教改实验小组”经过多年教学实践总结出来的一种新型教学方法。具体内容包括:启发诱导、创设问题情境;探求知识的尝试;归纳结论、归入知识系统;变式练习的尝试;回授尝试效果,组织质疑和讲解;单元教学效果的回授调节。现以“有理数的乘法”教学谈谈自己的体会。 “Trying to guide the effect of feedback method ” is a new type of teaching method summed up after years of teaching practice. The specific contents include: inspiration-inducing, creation of problem situations; attempts to explore knowledge; induction of conclusions, classification into knowledge systems; attempts of variant exercises; effects of feedback attempts, organization questions and explanations; feedback adjustment of unit teaching effects. Now I’ll talk about my experience with “rational multiplication ” teaching.