The lesson plan "Teeth" 1 activity goal for kindergarten middle class:
1, know the general causes of dental diseases, and know how to protect teeth.
2. Be able to actively communicate with peers and share according to the rules.
3. I am interested in exploring how to develop good habits to make my body healthy.
4. I know that if I don't brush my teeth, there will be small bacteria and I will get worm teeth.
5, learn the correct way to brush your teeth, know to rinse your mouth and brush your teeth after meals.
6. Cultivate children's awareness of developing good living habits.
Key points and difficulties of the activity:
Focus of activities:
Know the general causes of dental diseases and know how to protect teeth.
Activity difficulty:
Can actively communicate with peers and share according to the rules.
Activity preparation:
Children's songs and videos to protect teeth; Signs used by speakers after group discussion.
Activity process:
First, the conversation lead-in
1, children, please raise your hand if you think your teeth are healthy? Individual answer: What do healthy teeth look like?
2. Please raise your hand for children with unhealthy teeth. Individual answer: What's wrong with your teeth?
Second, the basic link
1, tell me what you know about the cause of tooth disease.
2. How to protect your teeth? (Eight people form a group, and five groups of children discuss it. The group recommends one child to speak, and the speaker should bring a sign to share the results of the group discussion.)
3. The representatives of the five groups spoke, and everyone listened.
4. After watching the feature film on tooth protection, teachers and children summarize together: protect and maintain teeth from the aspects of developing the habit of brushing teeth, eating less sweets, not eating food after brushing teeth at night, not being picky about food, exercising frequently and supplementing calcium. (Teacher's stick figure blackboard writing tips, summary. )
Third, the concluding part
1, learn nursery rhymes, and consolidate the knowledge of tooth care.
2. I hope that children will know to check their teeth regularly from today, and develop the habit of caring for their teeth in their lives. Everyone has a healthy tooth.
Activity goal of the lesson plan "Teeth" 2 in kindergarten middle class
1. Guide children to observe and compare eggshells soaked in vinegar and those without vinegar, and understand that acid will corrode teeth.
2. Make children know how to gargle after meals and brush their teeth in the morning and evening to protect their teeth, and initially master the correct brushing method.
3. Through activities, children can develop good hygiene habits.
Key and difficult points
Master the correct method of brushing teeth and develop good hygiene habits.
Activities to prepare
1. One eggshell soaked in vinegar and one eggshell not soaked in vinegar.
2.VCD cartoon "The King of Tooth Cavity", with some pictures of tooth protection.
3. A dental model, a toothbrush, children's biscuits, a small mirror, a paper cup and some water.
First, lead to topics to stimulate children's interest.
1. Play the disc "The King of Tooth Cavity" for children to watch.
2. Question: Why does the tooth decay king in the cartoon have tooth decay?
Second, children observe and discuss how can there be tooth decay?
1. Please look in the mirror and see how your teeth are.
2. Ask children to observe each other's teeth to see if there are holes in the baby's teeth.
3. Discussion: How can there be a hole?
Third, through observation, we know that acid will corrode teeth.
1. Ask children to observe eggshells soaked in vinegar and eggshells not soaked in vinegar.
2. What's the difference between them?
3. Discussion: Why do eggshells soaked in vinegar turn black and soft? Teacher's summary: Acid can corrode calcium in eggshells, so eggshells will turn black and soften when put in vinegar.
4. Ask children to taste the biscuits on the table, look in the mirror after eating and observe what is on their teeth.
5. Ask a professional dentist to explain and make a summary. After we eat, there will be many small foods left in our mouths. If we don't rinse our mouths immediately, these foods will become as sour as vinegar after a long time, and our teeth will become black and soft like eggshells just now, and holes will appear after a long time.
Ask the children to talk about the feeling of having cavities: What will happen with cavities?
V. Discussion: How to protect your baby teeth?
(Children are free to think of ways to show pictures while talking)
1. Brush your teeth in the morning and evening and rinse your mouth after eating.
2. Eat a healthy diet and don't eat foods that are too hard, too cold or too hot. Don't eat snacks and eat less sugar before going to bed.
3. Check your teeth regularly.
Sixth, learn the correct method of brushing your teeth.
1. Please talk and do.
2. Teachers read children's songs while showing tooth models and toothbrushes to demonstrate the correct brushing methods.
3. Children do it with teachers.
Seven, lead children to the bathroom, children gargle with cups of water.
Reflection after teaching Through learning, children understand the causes of dental caries and its harm to people's health, and they also master the correct method of brushing their teeth, which is conducive to developing good hygiene habits of brushing their teeth in the morning and evening, and has achieved good results. The whole teaching activity is progressive step by step, from materials, formation to organization, teachers' language and children's performance, etc., all of which are personalized and rich, which constantly stimulates children's desires, and children actively explore and learn and discover knowledge. In a word, it organically combines boring scientific activities with language activities and health activities, and achieves the purpose of integration.
The lesson plan "Teeth" in the middle class of kindergarten 3 1, understand the role of teeth and some simple common sense, and know how to protect teeth.
2. Master the correct method of brushing your teeth.
3. Cultivate children's good dental hygiene habits.
1, multimedia courseware.
2, each person has a small mirror. Cup and toothbrush.
I. Import activities:
1, watch the cartoon: "Teeth Escaped" to guide children to understand the use of teeth.
Teacher: I brought a nice cartoon to the children today. Let's enjoy it together!
Look at the fragment (1)
Teacher's question: What did Pippi do before going to bed? What will happen next?
Look at the fragment (2)
Teacher's question: What do you see? Can teeth be damaged? What will happen next?
Look at the fragment (3)
Teacher's question: Why did the tooth escape? (Because you don't brush your teeth, you will get dental caries, and your teeth will run away when you get angry.)
What will happen to people without teeth? (Guide children to answer the use of teeth)
2. What are the functions of teeth? Children discuss and answer, and teachers show pictures of courseware to show the function of teeth. (Chewing, Pronunciation, Beauty)
3, summary: the use of teeth can be great, can help bite and chew food; It can also help us pronounce correctly and make us speak clearly; Let's be beautiful. Therefore, children must pay attention to protecting their teeth.
Second, explore ways to protect teeth.
1 Do the children have cavities? Please look at each other and talk about it.
2. Each person takes a small mirror to see if he has cavities.
3. Show pictures of courseware to recognize dental caries.
Teacher: Teeth are very useful. We should protect our teeth, so how can we protect our teeth? Let's discuss it with our friends!
4. Combining with the pictures in the courseware, the teacher summarizes the methods of protecting teeth: brushing your teeth in the morning and evening, not biting hard objects, eating less sugar and checking regularly.
5. Today we will learn the correct method of brushing your teeth. Watch the courseware Le Le Learn to Brush Your Teeth. Every child learns to brush his teeth with the animation.
6. After watching the animation courseware, the teacher combined with the model to lead the children to practice the correct brushing method.
(The teacher will demonstrate first, and then ask individual children to try)
7. Perform "Brush Teeth Song"
Third, the end of the activity:
1 Play pictures of brushing methods, and children will experience and consolidate the correct brushing methods under the picture prompts.
2, children brush their teeth, teachers patrol guidance.
The Design Intention of Tooth 4, the Teaching Plan for Kindergarten Middle Class
Recently, some parents reported that children love sweets and sweets at home, and failed to develop bad habits such as brushing their teeth in the morning and evening and not paying attention to oral hygiene. For the children in the middle class, gluttony and the imperfect development of self-control ability lead to the problem of dental caries in many children, so dental health education in kindergartens is very important. The design of this educational activity fully takes into account the age characteristics and development level of children in the middle class. By using stories that children like to be familiar with, we can grasp the interests and attention of children and let them fully realize the importance of teeth, so as to learn to protect their teeth and develop the good habit of brushing their teeth in the morning and evening.
moving target
1, know how to protect teeth, and cultivate children's awareness and habits of protecting teeth.
2. Learn the correct method of brushing your teeth and develop a good habit of brushing your teeth in the morning and evening.
3. Educate children to develop good habits of cleanliness and hygiene.
4. Understand the discomfort caused by illness and learn how to prevent illness.
Activities to prepare
1, pictures of the story "Crocodiles are afraid, dentists are afraid"
2, dental caries form a wall chart
3, a set of tooth models (good teeth, bad teeth), toothbrush
4. The wall chart of correct brushing steps
Activity process
1, teacher: "I heard that the crocodile was ill and wanted to see a doctor. What happened? Let's go and have a look! "
2. The teacher shows the picture of "Crocodiles are afraid, dentists are afraid" and tells stories.
3, the teacher asked:
(1) Who is in the story? (crocodile, dentist)
(2) What happened to them? (Crocodile goes to see a doctor)
(3) Why did the crocodile go to see a doctor? (Its teeth are sick)
(4) Why do crocodile teeth get sick? (He doesn't brush his teeth and likes to eat sugar ...)
4. The teacher shows the wall chart of dental caries formation, and asks the children to observe it. The teacher explains the causes and harm of dental caries formation.
5. Teacher: What do you think should be done to protect your teeth? (Brush your teeth in the morning and evening, eat less sugar, eat less sweets, and rinse your mouth after meals ...)
6. Teacher's summary and supplementary answer for children: We should eat less sweets, remember to gargle after eating, spit out the dirty things left in the mouth and teeth, and remember to brush our teeth in the morning and evening to protect our teeth, so that our teeth can be healthy and healthy, and we can live happily.
7. Teacher: You all say that brushing your teeth in the morning and evening can protect your teeth. Do you brush your teeth? (will)
8. Ask children to demonstrate how they usually brush their teeth. Other children think about whether this is right or not.
9, the teacher to evaluate the demonstration of children, and show the tooth model, explain and demonstrate the correct brushing method.
10, teachers lead children to learn the correct method of brushing their teeth.
1 1, show the wall chart of correct brushing steps, and lead the children to practice brushing their teeth while reading nursery rhymes.
Attached:
I can brush my teeth (children's song)
Small toothbrush, in your hand, open my little mouth.
Brush the upper teeth downwards, brush the lower teeth upwards, brush them left and right, and brush them inside and outside.
Brush in the morning, brush at night, brush clean without tooth decay.
Laugh after brushing your teeth, revealing the glistening teeth.
Teaching reflection:
Children know that healthy teeth are white, painless and have no gaps; Unhealthy teeth will hurt, the delayed color is yellow or black, some teeth have wormholes, and some can't bite slightly hard food. When discussing how to protect teeth, some children lack the habit of discussing and communicating quietly, can't listen to their peers' speeches as required, and have a strong sense of self. Some groups compete for speech signs, so the routine of activities needs long-term training. Generally speaking, children know the causes of dental diseases and master the methods of protecting teeth.
Design intention of the lesson plan "Teeth" 5 for kindergarten middle class;
Small class children like to touch and climb, and then wipe their dirty little hands; Some also like to eat it in their mouths, which is easy to be infected with bacteria, leading to illness and diarrhea. Some children don't brush their teeth at night after eating candy. They often see their children go to the dental hospital to see the decayed teeth and cry in the hospital. Seeing this, I want my children to know that brushing teeth and gargling need to start from an early age. It is a common and beautiful thing for children to know about clean hands and white teeth in this class. Understand the correct way to brush your teeth, and let children know that it is a habit to love hygiene.
moving target
1. Feel the story and know the importance of cleaning hands and teeth.
2. Master the correct way of brushing your teeth and have good hygiene habits.
Focus of activities
Feel the story and know the importance of cleaning hands and teeth.
Activity difficulty
Master the correct way of brushing teeth and have good hygiene habits.
Activities to prepare
1. PPT, music, drawing a book.
Activity process
First, my little hands and teeth
Teacher: Are your little hands clean? Did you wash your hands after playing games? Are your teeth white? Do you brush your teeth after eating every day?
Teacher: Today, the teacher brought a story to see if the children in the story love hygiene as much as yours.
Second, clean hands and white teeth
1. Small hands touch, bacteria come.
Teacher: "Clean Hands and White Teeth" Hold out your hand, it looks clean and there is nothing? But is there really nothing? Figure 1
Figure 2. Teacher: Wow, what is this? Our hands are white and tender, but if we look closely with a microscope, we will find many strange things.
Teacher: Where do our little hands touch with bacteria? (Then let's see where the children's bacteria come from.) Figure 3
2. Dirty hands will make you sick.
Teacher: The children also did some things with their dirty little hands. That's terrible. What happened? Figure 4, 5
It turns out that doing something with dirty little hands can cause so many diseases. Bacteria are really naughty.
2. Dirty teeth will cause tooth decay.
Teacher: Let's look at our teeth again. They look clean and there is nothing dirty. However, is this really the case? If you look closely with a microscope, there are many strange things on these white and clean teeth! )
Teacher: Who do bacteria on teeth like best? Sweet things like chocolate, candy, drinks, etc.
Third, the teeth are clean.
1. Dirty teeth
Teacher: Wow, what's on your teeth?
Teacher: How can we help it? Make your teeth clean.
I brush my teeth.
Teacher: How to brush your teeth correctly? Can you read it? How is it done on the picture?
Children learn and talk.
Fourth, the teeth are really clean
Teacher: Haha, the teeth are really clean, which drives away all the bacteria. Look, they're scared.
If you want to have clean hands and white teeth, you should wash them clean!
I love brushing my teeth.
Let's share this with our parents when we go home.
The activity goal of the lesson plan "Teeth" 6 in kindergarten middle class:
1, appreciate and understand the story "The Big Tiger Without Teeth".
2. Let children know that eating too much sweets will damage their teeth and understand the basic methods of cleaning their mouths after meals.
Activity preparation:
1, small picture: candy, cookies, drinks, snacks,
2, operating pictures
Activity process:
First, tell stories
Teachers use animation to tell children the story "The Big Tiger without Teeth", and randomly guide children to understand the reason why the big tiger has no teeth by asking questions.
1 Teacher: Why does the big tiger have a toothache?
2. What did it eat?
3. What happened to the tiger's toothache in the end?
The teacher asked the children to talk about whether they had a toothache, and what they felt when they had a toothache, so as to further guide the children to discover the importance of caring for their teeth.
Second, observe the pictures
Teacher shows pictures of teeth.
Teacher: What's this? What's it like? (Guide children to say white, bright and hard. )
Third, discussion and demonstration
The teacher asked the children to talk about what they like best and what snacks they eat every day.
The teacher told the children that when there are too many sweets on their teeth, they will turn black and go bad. Teachers show pictures of bad teeth, so that children can intuitively understand the changes of teeth.
Fourth, know how to clean your teeth.
The teacher asked the children to talk about some ways to clean and protect their teeth and prevent them from getting bad. Such as eating less sweets, gargling and brushing your teeth after meals.
V. Operation: Filling teeth
Instruct children to paste their teeth with small square pieces of white paper.
The purpose of activity 7 of the lesson plan "Teeth" for the middle class in kindergarten
1. Understand the importance of brushing your teeth in the morning and evening.
2. Learn how to brush your teeth.
3. Appreciate the rhythm of children's songs.
Activities to prepare
Toothbrush, toothpaste, small mirror
Open hand puppets, dentures and tooth decay patterns, gauze.
Tooth model, toothbrush provided by children.
Activity process
1. Show your toothbrush and toothpaste, and ask the children to talk about their uses and when to use them.
2. Ask children to look in the mirror and observe the color and shape of teeth.
3. The teacher put false teeth in the hand puppet's mouth in advance, one of which is tooth decay. Stick a piece of gauze on the doll's face. The teacher pretends to be a doll and groans. Ask the children to guess why the doll is uncomfortable.
4. The hand puppet asked the child to find out where there was a big black hole in his teeth, and asked the child to discuss the causes of tooth decay, such as eating too much candy and not brushing his teeth in the morning and evening.
5. Ask children to think about how to treat tooth decay for their dolls, such as regular check-ups, brushing their teeth in the morning and evening, and eating less candy.
6. The teacher shows the tooth model to demonstrate brushing, and the children use their own toothbrushes to imitate the action of brushing.
Summarize and share
Ask children to check whether they have cavities.
Activity evaluation
1. Can imitate the action of brushing teeth and master the method of brushing teeth.
2. Be able to brush your teeth in the morning and evening.
Extended activity
Ask children to record the number of times they brush their teeth in a week.
Activity suggestion
1. Put the tooth model in the activity area, post the flow chart of brushing steps, and practice brushing.
2. Ask the children with cavities in the class to talk about the reasons for their long cavities and their feelings when they have toothache.
The teaching plan "Teeth" in the middle class of kindergarten 8 Activity objectives:
1, know the importance of protecting teeth and how to protect teeth;
2. Learn to brush your teeth correctly and develop a good habit of brushing your teeth in the morning and evening;
3. Be willing to explore and experience the fun of music games and performances.
Activity preparation:
1, knowledge preparation: know the harm of tooth decay in advance.
2, material preparation: headdress (teeth, bayberry, candy, ice cream, biscuits, water, mushrooms, tomatoes, guava, celery, etc.), brushing method courseware.
Operating materials: small basket, spoon, open mouth doll, realistic food, record form, pen; Tooth model, toothbrush, drawing card of brushing steps; Brush your teeth weekly card form, digital card, smiling face sticker; Mirror, interdental brush, dental floss, paper cup, mineral water, etc. Dolls, small animals, syringes, tooth extraction tools, medicine bottles, etc.
Activity process:
First, music games (teeth to find good friends)
1, children are divided into three groups: one group plays the role of teeth, the other group plays the role of food beneficial to teeth, and the other group plays the role of food harmful to teeth;
2. When the music started, the characters began to find friends. When they found them, they danced hand in hand, and the music stopped to see who didn't find friends. Tell me why there are no friends.
Teacher's summary: We should eat more food that is good for our teeth and less food that is bad for our teeth. Anything that is too sour and sweet will make bacteria grow in our teeth.
2. Free exploration and grouping operation
1, introduction, how can we make our teeth whiter, more beautiful and healthier? Let's protect our teeth together. Explain the precautions.
2. Grouping operation:
One group: learn to brush teeth (tooth model, toothbrush, diagram, etc.), and guide children to brush their teeth according to the diagram or according to their own experience; (key group)
Group 2: Feed the doll (small basket, spoon, open mouth doll, realistic food, record form, pen), and ask the children to feed the doll with healthy food for teeth, and record which foods are beneficial to teeth and which are harmful to teeth; (difficulty)
Group 3: Make a weekly card for brushing teeth (weekly card form, digital card, smiling face sticker), guide children to stick the numbers in the form in order, and record their own brushing situation) (cultivate the good habit of brushing teeth in the morning and evening)
Four groups: to beautify their teeth (mirror, interdental brush, dental floss, paper cups, mineral water, etc.), guide children to look for mirrors and clean up the residues in their teeth with tools; (experience improvement)
Five groups: dentists (dolls, small animals, syringes, tooth extraction tools, medicine bottles, etc.) (knowledge expansion)
3. Share comments: Please share with us what you just did? Focus on the 123 groups.
4. Summarize the correct brushing method: Play the courseware twice. Encourage children to imitate brushing actions.
III. Performance: Toothbrushing Song
1, guide the children to perform the action of brushing their teeth freely according to the music, and perform it twice.
2. Conclusion: Let's teach the younger brothers and sisters in the small class to brush their teeth. The activity ended naturally in the music.
IV. Extension activities
1, children practice brushing their teeth with tooth models in the operation area;
2. Add "Dental Hospital" to the role game, and ask the little doctor to help you check your teeth.
The activity goal of "Teeth" 9, the teaching plan for kindergarten middle class:
1.Let children practice drawing the characteristics of teeth and color the pictures.
2. Let children know to protect their teeth and keep brushing their teeth every day.
Key and difficult points:
Let children practice drawing the characteristics of teeth and know how to protect their teeth.
Difficulty: the skill of coloring pictures.
Activity preparation:
1. Drawing paper, oil pastel.
Activity process:
First, teachers guide children to observe their good friends' teeth.
1. Teacher: "Children, we have observed our own teeth and our good friends' teeth the other day. Today, let's take a look again and see if our teeth have changed? " "Look for tooth loss, tooth decay, etc."
2. Children observe each other's teeth.
3. Teacher: "The children have observed the changes of teeth just now. Now let's draw them together!"
Second, draw a tooth.
1. The teacher invited a child to the stage. The teacher demonstrated the child's teeth on the blackboard, and drew her hairstyle and clothes together to color the picture.
2. Ask children to observe their partner carefully, and then observe what characteristics he wears. The key point is to highlight him drawing his teeth.
Third, children are free to practice painting.
1. Teachers distribute drawing paper and oil pastels to children, and ask children to use their imagination to draw their friends' teeth, their own teeth or relatives' teeth.
2. Children begin to paint seriously, and teachers tour to guide them.
Fourth, evaluate and compare.
1. Children share each other's works.
2. Please ask several children to show their paintings on the stage separately and say who is painted on the screen.
3. "Did you lose your tooth? How many are missing? Do you have cavities? "
V. concluding part
Show some children's paintings on the theme wall for other children to enjoy.
The lesson plan "Teeth" 10 in kindergarten middle class Activity goal:
1, through the appreciation of the story, children can initially understand that different teeth have different functions and stimulate their awareness of caring for teeth.
2, know the importance of brushing your teeth, let children develop the habit of brushing their teeth every day.
3, a preliminary understanding of health tips.
4. Educate children to develop good habits of cleanliness and hygiene.
Activity preparation:
1、PPT
2, biscuits, dried fish fillets, beef jerky and other foods
Activity process:
I. Import activities
Teacher: The teacher invited a little guest today. Who is he? He is Harry the bear. What is he doing? He is comparing his teeth with our children. You can compare with Harry and the children next to you to see who has the whitest teeth.
Many children have white teeth like Harry. Mother bought him a lot of delicious food to reward Harry. What do you have?
Second, show PPT and enjoy the story
1, sweet cookies, Harry opened his mouth and was about to taste them. The front teeth said, Let me try. Harry's front teeth are like a sharp knife. Cut and cut, and the cookies will be cut off soon. Show me the front teeth of PPT tooth model. What do the front teeth look like? Take out your little mirrors and have a look (wide and big). Where are the front teeth? (in the middle of the tooth, like two big doors), what kind of tooth is this? Emphasize "front teeth" (my front teeth are wide and wide, like cutting a knife) (remind the child to put down the mirror). The main function of front teeth is to cut off food.
2. What else? The fragrant dried fish fillets, the front teeth said: Let me try it. The front teeth bit hard and didn't bite. What can I do? The fangs next to the front teeth said, I'll tear it, and the dried fillets will be torn off as expected. Show me the canine teeth of PPT tooth model. Let's see where such powerful canine teeth are. (Remind the child to take out the mirror and look for it) It turns out that they live on both sides of the front teeth. Look at the fangs of your best friend next to you. What kind of tooth is this? Emphasize "canine teeth" (my canine teeth are sharp and sharp, tearing like a nail) (remind the child to put down the mirror). The main skill of canine teeth is to tear apart food.
3. Is there anything delicious? Beef jerky, Harry is very happy, this is his favorite food. He bites it with his front teeth, but he can't bite it. He tears it with his canine teeth, but it can only be torn into small pieces. What should I do if it can't be ground? At this time, the innermost molar couldn't help but say, let me try. I have great strength. I will grind hard food and grind it soon. When Harry tried, his teeth were really fierce, and he soon ground the beef jerky. Show me the PPT tooth model. This is the molar. Where are your molars, children? (Remind children to take out the mirror to find their molars) What do molars look like? It is the most powerful of all teeth. ) What kind of tooth is this? Emphasize "grinding teeth" (remind children to put down the mirror) My grinding teeth are big and big, like a millstone. The function of grinding teeth is to grind food. In fact, we eat a lot of things and finally grind them by grinding our teeth, so that the food we eat in our stomachs is more conducive to digestion.
It turns out that our teeth have their own names. Each of us has incisors, canines and molars. They cooperate with each other to grind food. Harry grew up slowly, and it began to change its teeth. Look, what tooth did Harry miss? (front teeth), after a while, Harry began to change his teeth again. What teeth will it be this time? Do you know what tooth Harry finally changed? Consolidate children's understanding of teeth and let them guess what teeth are missing. )
Third, share food
Children are really capable. They can tell what teeth Harry has lost soon. Harry's mother will reward our children with delicious food (let's wash our hands first). Let's try using front teeth, canines and molars. You can talk to your good friends about which teeth are convenient and labor-saving to eat while eating. Summary: Our teeth have their own functions. The front teeth are responsible for cutting food, the canine teeth are responsible for tearing food, and the molars are responsible for grinding food. All the teeth must cooperate with each other to make the teeth stronger and the food eaten will be easier to digest. We children understand these truths, and we will know how to ask our teeth for help better when we eat, right? We ate so many delicious things just now. Now let's go and rinse our mouths with xu teacher.
Teaching reflection:
During the whole activity, the thinking is clear, the teaching attitude is natural, and the class can be taught according to the flow of the teaching plan. However, the atmosphere of the whole activity process is a bit heavy, which can't reflect the children's interest in the activity.