教学目标:知识与技能:了解蛀牙的原因,学会描绘出细菌的形象及细菌在嘴巴里的活动。过程与方法:以欣赏、交流、观察的方法引导学生进行创想拟人化的蛀牙细菌和嘴巴里的世界情感态度价值观:提高学生的观察能力和想象能力培养学生养成良好的卫生习惯。教学活动:设计思路:《牙蛀了》一课是小学低年级新版美术教材《让牙齿更健康》这个单元的第一课。是针对每个学生最熟悉但又不太注意观 Teaching Objectives: Knowledge and Skills: Understand the causes of tooth decay, learn to portray the germ’s image and bacteria’s activities in the mouth. Process and methods: to guide students through creative, communication, observation method of tooth decay toothpaste germs and the mouth of the world emotional attitude values: to improve students’ ability to observe and imagine training students to develop good health habits. Teaching Activities: Design Ideas: “Tooth-decaying” lesson is the first lesson of the new elementary school textbook “Let the teeth be healthier”. For each student is the most familiar but not too noticed