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北师大版小学数学教材起步早、影响广、改革力度大,一直是国内小学数学的主流教材之一。2012年秋学期,其四版教材正式投入使用,在充分继承和发扬前三版优势的同时,四版教材着重改善了“粗放式”学习过程指导,采用“情境+问题串”的体例模式,注重引导教师的教与学生的学,深受广大师生欢迎。世上无完美,教材也不例外。我在认真研读、精心实践教材的同时,发现部分习题存有不足,给教学带来困扰,现提出2例,求教各位同仁。
Beijing Normal University version of primary school mathematics textbooks started early, wide influence, reform efforts, has been the mainstream of primary school mathematics teaching materials. In the autumn of 2012, the fourth edition of the teaching materials was formally put into use. While fully inheriting and carrying forward the advantages of the first three editions, the four editions of textbooks focused on improving the guidance of the “extensive” learning process and adopting the “situation + question string” Mode, pay attention to guide the teaching of teachers and students, welcomed by the majority of teachers and students. No perfect world, textbooks are no exception. While studying hard and carefully practicing the teaching materials, I found that some of the exercises were inadequate and had troubled teaching. I have now put forward 2 examples to ask my colleagues.