教学是一个复杂的、思虑周密的过程。为了追求教学流程的顺畅,在教学时教师往往层层铺垫,处处设防,努力避免或减少学生的错误。尤其是公开课教学,很多老师生怕学生回答错误,把提问或作业展示的机会,总是让给优生。但往往事与愿违,学生仍会出现这样那样的错误。 Teaching is a complex, thoughtful process. In order to pursue a smooth teaching process, teachers tend to lay the groundwork in teaching. They are fortified everywhere and strive to avoid or reduce their mistakes. In particular, open class teaching, many teachers are afraid of students to answer the wrong questions or homework opportunities, always give eugenics. However, often contrary to expectations, students still appear such a mistake.