认真开展教研活动,是提高教学质量的重要途径。在开展教研活动中,我们经过多次试验,认为同教材对比教学是一种较好的方法。我们在组织高一数学公开教学时,教研组集体讨论了“对数换底公式”的教法,根据“六认真”的要求拟定了教案,然后安排两位教师在同一天进行实践。开始部分教师对此不感兴趣,认为这是“比口才”,没有意思。但多数教师认为,有没有意思,必须通过实践才能下结论。于是对比教学就开始了。真是不比不知道,一比很有效。两位老师都是严格按照教案讲课的,但讲法各异,效果不同。评议中大家取得了一致的看法:一、语言表达是准确阐述数学概念,有效启发学生思维的教师必备的基本素质,是“提高45分钟效益”的重要手段,教师必须掌握这门艺术,必 Seriously carry out teaching and research activities, is to improve the quality of teaching an important way. In carrying out teaching and research activities, we have tried many times, that the teaching of contrast with the teaching material is a better way. When we organized the high school mathematics open teaching, the teaching and research group discussed the teaching method of “logarithmic bottom substitution formula”, formulated the lesson plans according to the requirements of “six conscientiousness” and arranged the two teachers to practice on the same day. Some teachers are not interested in this beginning, think this is “more eloquent than”, meaningless. But most teachers think that there is no meaning, we must conclude the practice. So comparison teaching began. Really better than do not know, a very effective. Both teachers lectured in strict accordance with the lesson plan, but different ways, the effect is different. In the review, we all agreed on the following: 1.Language expression is an essential means for teachers to accurately explain the concept of mathematics and effectively inspire students' thinking. It is an important means of “improving the benefit for 45 minutes.” Teachers must master this art.