Activity objectives:
1, a preliminary understanding of the structure of teeth, knowing that teeth can not only crush food, help digestion, but also help to pronounce correctly and make us speak clearly.
2. Know that teeth are very useful and pay attention to protecting teeth.
Activity preparation:
1, one apple for every four people, 1~2 shrimps per person.
2. A pair of tooth models. Six surgical cards "White Teeth".
Activity flow:
1, let children eat apples and get a preliminary understanding of the use of teeth.
Invite children to eat some apples today. Please eat slowly and think while eating. How do you eat apples?
Guide children to speak their experiences boldly, knowing that they use their teeth to help bite off the chewed apples.
2. Let children know the structure of teeth.
(1), do you all have teeth? Open your mouth and let's see what color the teeth are.
Let the children look at each other and know that everyone has teeth and their teeth are white.
(2) Show the tooth model (or look at the card 1-4) Q: Each of us has a pair of white teeth. Let's see what teeth look like. What is it like? What is the difference?
The teacher explained that the teeth have two parts, the upper and lower parts are the same, the front teeth are flat, the lower teeth are pointed and the rear teeth are square.
(3) What are the uses of these different teeth?
Please see card 1-4 for discussion. With the help of the teacher's explanation and questions, we know that flat teeth can cut off food, sharp teeth can tear food, and square teeth have the greatest strength and can crush food. They have their own functions. They help us to bite and chew food.
3. Let the children taste the shrimp strips and experience the effects of different teeth again.
4. Discussion: Besides helping us eat food, what's the use of teeth?
Let children practice the pronunciation of "teacher", "four" and "Chinese characters", and so on. The teacher stressed that when pronouncing these sounds, the upper and lower teeth are separated and close together. Knowing teeth can also help us pronounce correctly and make us speak clearly.
5, teachers and students * * * Look at the operation card 5-6 discussion summary: teeth have many uses, so how should we protect our white teeth? Rinse your mouth after meals, brush your teeth in the morning and evening, and don't eat anything like sugar or hard food before going to bed. Keep your teeth from turning yellow and black, keep our teeth white forever and serve us every day.
End of activity:
1, combined with dining activities, let the children talk about how to eat chewy food such as beef and celery with their teeth, and don't pack or suck rice, so as to form the habit of eating with their teeth correctly.
2. Use daily activities to let children talk about these questions: Why are your teeth black? Why do your teeth rot? What's wrong with that? Let children know that teeth are clean and tidy, which is not only beautiful, but also reduces diseases.