装订班级学号姓名※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※
装订班级学号姓名※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※
装订班级学号姓名※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※
装订班级学号姓名※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※
装订班级学号姓名※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※
2023年青岛版小学科学五年级下册第二单元《空气》第三课时《二氧化碳的性质》说课稿一、说教材本课是青岛版小学科学(六三学制)五年级下册第二单元空气第三课时《二氧化碳的性质》。主要是讲述二氧化碳是具有特殊性质的一种气体,是空气的重要组成部分以及二氧化碳的特点和作用。学习并掌握二氧化碳的基本来源、性质。通过实验了解醋和小苏打反应能生成二氧化碳,明白汽水的原理及学会自制汽水。二、教学目标1.通过联系日常
第四单元空气1.空气知多少前测对象:某小学一年级一个班学生参测人数:40人前测过程:第一步:以篮球为例,引导学生学会画泡泡图。板书:篮球教师提问:你知道有关篮球的哪些知识?只要是跟篮球有关的都可以说。学生回答,教师画出以篮球为中心的泡泡图。第二步:要求学生画出有关空气的泡泡图。教师:把中间的篮球改成空气,要求写出自己知道的和空气有关的知识,能写多少写多少。不会写的字可以用拼音代替。自己完成,不能讨