牙齿的类型
Types of Teeth
认识人类牙齿的四种类型（门牙用来切割，犬齿用来撕裂，前磨牙和磨牙用来研磨），并理解牙齿形状与功能的关系，就像其他动物一样——草食动物的牙齿扁平，肉食动物的牙齿尖锐。
Identify the four types of human teeth (incisors for cutting, canines for tearing, premolars and molars for grinding) and understand that tooth shape is linked to function, just as in other animals — herbivores have flat teeth, carnivores have sharp teeth
学习证据 / Evidence
- 说出四种牙齿的名称，并描述它们各自的功能：门牙切割食物，犬齿撕裂食物，前磨牙和磨牙研磨食物。
- 比较人类牙齿与草食动物牙齿（扁平的，用来磨碎植物）以及肉食动物牙齿（尖锐的，用来撕咬肉类）的不同。
- 解释人类拥有所有类型的牙齿，因为我们是杂食动物——既吃植物也吃肉。
- Name the four tooth types and describe each one's job: incisors cut, canines tear, premolars/molars grind
- Compare human teeth to herbivore teeth (flat, for grinding plants) and carnivore teeth (sharp, for tearing meat)
- Explain that humans have all types because we are omnivores — we eat both plants and meat
评估问题 / Assessment
{{name}}能照着镜子，指出自己不同类型的牙齿，并说出每种牙齿的作用吗？
Can {{name}} look in a mirror, point out their different types of teeth, and explain what each type is for?