差错在教学中是不可避免的。差错是一种容易被忽视又亟待开发的宝贵教学资源,其价值有时并不在于差错本身,而在于师生是否能从中获得新的启迪。通过有效的处理可以化差错为教学资源,为开展教学活动、解决教学问题、促进数学交流服务。 Errors are inevitable in teaching. Error is a kind of valuable teaching resource that is easily overlooked and needs to be developed urgently. The value of error is not always the error itself, but rather whether teachers and students can gain new enlightenment from it. Through effective processing, it can turn errors into teaching resources, carry out teaching activities, solve teaching problems and promote mathematical exchange services.