新理念的贯彻落实是一个新旧观念激烈碰撞的过程,本文试图通过对“5-2=?算法是否要优化”这一波三折的过程,谈谈自己作为一位一线教师学习贯彻新课程的体会。第一次教学片断上课伊始,我创设了一个小刺猬背苹果的情景.引导学生列出算式5-2。并就5-2=?进行算法探索。学生一共得出了五种算法:看图直接数、掰手指、珠心算、推理得出、数的组成。教师小结:刚才我们算5-2用了很多的方法。这说明我们每 The implementation of new ideas is a fierce collision of old and new concepts. This paper tries to talk about oneself as a front-line teacher to learn and implement the new curriculum through the process of “5-2 =? Algorithm optimization?” First Teaching Pieces At the beginning of the class, I created a scenario where Little Hedgehog Back Apple guides students to formulate formulas 5-2. And 5-2 =? Algorithm to explore. The students altogether come up with five kinds of algorithms: the direct number of the figure, the breaking of the finger, the counting of the beads, the inference, the composition of the number. Teacher Summary: Just now we counted 5-2 using a lot of methods. This shows us each