《义务教育数学课程标准》强调:对学生的日常表现,应以鼓励、表扬等积极的评价为主,采用激励性的评语,尽量从正面引导。心理学家威廉杰姆士说:“人性最深层的需求就是渴望别人的欣赏和赞美。”“即时评价”是新课改背景下催生的一种教学理念。它作为师生交流的一种有效方式贯穿于课堂教学活动的始终。 “Compulsory education mathematics curriculum standards” emphasizes: the daily performance of students, should be based on positive evaluation such as encouragement and praise, with motivational comments, as far as possible from the positive direction. Psychologist William Jemsey said: “The deepest demand of human nature is to yearn for the appreciation and praise of others.” “” “Instant evaluation ” is a kind of teaching concept born under the new curriculum reform. It is an effective way to communicate with teachers and students throughout the classroom teaching activities.