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有幸上了一次市级教研课,于是有了以下的经历:一、课前细思《铅笔有多长》这课内容是在学生认识长度单位米和厘米,有了一定的用尺度量的基础上进行教学的。教材通过让学生观察、估计、测量等活动明确毫米、分米产生的实际意义,知道毫米与厘米、厘米与分米、分米与米间的关系,会用毫米、分米作单位进行测量,帮助学生初步建立毫米、分米的长度观念。对于新的计量单位毫米,学生通过使用直尺,已经有了一些感性认识,计量单位分米虽然不常用,
Fortunate enough to go to a municipal teaching and research class, so have the following experience: First, before class thinking “How Long Pencil” This lesson is about students in length units of meters and centimeters, with a certain amount of measurement basis On the teaching. Teaching materials through the observation, estimation, measurement and other activities of students clear millimeter, the actual meaning of decimeter, millimeter and centimeter, centimeter and decimeter, the relationship between decimeter and meter, millimeters, decimeter as a unit to measure, Help students to establish the initial concept of the length of the millimeter, decimeter. For the new unit of millimeters, students already have some perceptual knowledge through the use of straightedges, although decimeters for measuring units are not commonly used,