在小学数学课堂教与学的过程中,教师常感慨要新授的知识量太多,难以完成教学任务,而学生也难以达到学习目标。但在教学过程中,教师常发现很多知识的教学都存在“相似”的感觉,如果教师能将这些“似曾相识”的知识进行系统的梳理,运用类比推理进行教学,则能大大减轻学生学的压力,切实提高教师的教学效率。 In the process of teaching and learning in primary mathematics classrooms, teachers often feel that there is too much knowledge to be newly granted, which makes it difficult to complete teaching tasks and students can hardly achieve their learning goals. However, in the process of teaching, teachers often find that there are “similar ” feeling in teaching a lot of knowledge. If teachers can systematically sort out these “deja vu ” knowledge and use analogical reasoning to teach, Students learn the pressure to effectively improve the teaching efficiency of teachers.