“罗森塔尔效应”明确指出,学生的智力发展与教师对其的关注度成正比,教师的期望和评价对学生的知识学习行为和学习状态产生重大影响。小学生心智发展还不够成熟,其行为受教师影响程度更高。因此,教师恰如其分地评价学生,将会给教学带来十分积极的影响。教师有意识地设计和运用教学评价,有助于激发学生的学习兴趣,提高学生学习的积极性和主动性,调动学生的创造性思维。一、运用正面评价提高学生的自信心根据马斯洛层次需求理论,自我实现是人的最高需求, “Rosenthal effect ” clearly pointed out that the development of students ’intelligence is directly proportional to the teacher’s attention, and the teacher’s expectation and evaluation have a significant impact on students’ knowledge-learning behavior and learning status. Primary school mental development is not mature enough, its behavior is more affected by the teachers. Therefore, teachers appraise students appropriately, which will have a very positive impact on teaching. Teachers consciously design and use of teaching evaluation helps to stimulate students ’interest in learning, improve the enthusiasm and initiative of students, and arouse students’ creative thinking. First, the use of positive evaluation to improve students’ self-confidence According to Maslow’s hierarchy of needs theory, self-actualization is the highest human needs,