数学教学,总是基于一定的素材展开的。由于学生,尤其是小学生,其数学认识往往是由生活经验支撑的,因此数学素材所包含的信息为学生所熟识,就显得十分重要。也正因此,教师在备课中或在生活中,获得一些有意义的素材,就显得十分重要。下面,记录我所经历的三次关于素材获得的过程,与大家分享。经历一:从2分硬币到一支香烟北师大版《数学》三年级“克与千克”一课,教学的主要目标之一,同时也是本节课的难点 Mathematics teaching is always based on a certain amount of material. Because students, especially primary school students, whose mathematical knowledge is often supported by life experience, it is very important that the information contained in the mathematical material is familiar to students. Therefore, it is very important for teachers to obtain some meaningful material in lesson preparation or in life. Below, I recorded three times I have been on the material acquisition process, to share with you. Experience a: from 2 coins to a cigarette Beijing Normal University version of “Mathematics” third grade “gram and kilogram ” class, one of the main goals of teaching, but also the difficulty of this lesson