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在课堂教学中,教师常常通过提问的方式启发、引导学生,并对学生的回答给予评价。而准确科学的教学评价不仅能够判定学生回答的正误,而且可以增强师生之间的情感交流,增强学生学习的积极性。在教学“一元一次方程组”时,我先出示了例题:我国云南发生雪灾,灾区需要大批帐篷。一家被服厂有4条服装生产线和5条被褥生产线,为支援灾区,厂里决定在3天时间内赶制1000顶帐篷。如果开动1条服装生产线和2条被褥生产线,每天可以制
In classroom teaching, teachers often use questions to inspire, guide students and give comments on their responses. The accurate and scientific teaching evaluation can not only determine the correctness of the students’ answers, but also enhance the emotional exchanges between teachers and students and enhance their enthusiasm for learning. In teaching “a one-time equation system ”, I first showed an example: a snowstorm occurred in Yunnan, China, the need for a large number of tent tents. A clothing factory has four garment production lines and five bedding production line, to support the disaster area, the factory decided to make 1,000 tents in 3 days time. If you start a garment production line and two bedding production line, can be made every day