10 lesson plans for class meetings on water saving knowledge

Teaching is a creative labor. Writing an excellent lesson plan is a comprehensive reflection of the designer's educational thoughts, wisdom, motivation, experience, personality and teaching artistry. Below I will bring you a lesson plan for a class meeting on the theme of saving water, I hope it can help you!

Lesson plan for a class meeting on the theme of saving water 1

An activity background

Water is an important material basis for human survival and development. Development has become an eternal theme of mankind, and water resources play a dominant role in human development. With the rapid development of society and economy, the shortage of water resources has become increasingly serious, and the resulting water crisis has become a constraint for the implementation of sustainable development strategies in our country. Water waste is a very serious problem in all schools today. It’s not that many schools don’t pay attention to this problem, but they just don’t have a good way to solve it. Although the school tried every means to save water, it had little effect. In response to this phenomenon, we have prepared to carry out "water saving" activities based on the actual situation of our school to further enhance students' awareness of environmental protection and water saving, and hold small hands and big hands to bring "water saving" into every household through children.

2. Time and place of the event

It will be held in the school from 14:00 to 16:00 on November 27, 20__

3. Objects of the event

Teachers, students and parents of the whole school, and representatives of some party schools in the district

IV. Purpose of the activity

1. Carry out "water saving" publicity activities for teachers and students of the whole school, Enhance awareness of water conservation.

2. Let our school serve as a demonstration and promote it to the whole district, so as to play a good role in "water saving" in the whole district.

3. Cultivate school students’ scientific inquiry abilities and enhance students’ awareness of environmental protection and water conservation.

5. Content and process of the activity

(1) Preparatory work for the activity

In order to make this activity colorful and achieve the expected results, the school Careful preparations were made.

1. Make all preparations according to the activity plan

2. Actively seek support from all parties to complete the activity smoothly

(2) Activity content and Process

1. Carry out "Water Saving" knowledge promotion activities

Each class A held a "Water Saving and Water Use" themed class meeting. Taking this class as a unit, the whole school will learn more about "water resources" and enhance students' awareness of "water saving".

B. Use pictures, exhibitions, blackboards, etc. to widely publicize "water-saving" knowledge. In order to widely publicize, create a strong atmosphere of "water-saving" practical activities so that students can truly appreciate water resources. The seriousness of scarcity and the importance of water conservation have made students, parents and guests aware of water conservation knowledge everywhere. The school has carried out knowledge promotion in every available corner. For example, large propaganda slogans are pasted and hung in the pool and where water utensils are used. Each class also publicizes the knowledge and importance of water conservation through exhibition boards, handwritten newspapers and blackboard newspapers, so that people can feel the water conservation no matter where they go. Water, water, water. Start with small things around you.

C. Distribute promotional materials to parents and conduct surveys on household water conservation, so that water conservation reaches every household.

D. Introduce and promote our school’s intelligent water-saving toilet flushing system to guests.

3. Hold water-saving knowledge activities

A. Conduct a "water-saving" theme class meeting in class units from 14:00 to 16:00

B. Innovative activities with the theme of "Water Saving and Water Use" are carried out on a grade-by-grade basis. The tentative plan is: Grades 1 and 2 will watch a knowledge film about water, learn what water is, and have a water-saving painting competition. The third and fourth graders collected information about water pollution and water waste, and after communicating in the class, they reflected on the dangers of water pollution and water waste in the form of handwritten newspapers and speeches.

The fifth and sixth graders drew up plans with the theme of "water saving" and designed water-saving devices and methods. They were displayed from 15:00 to 16:00, and the whole school took turns to visit.

C. Under the guidance of teachers and parents, students formulate a small "water-saving" plan, use water for washing hands and vegetables to flush toilets at home, and compare the water usage before and after "water-saving".

D. Conduct a “Water Saving and Water Use” publicity and signature campaign.

6. Expected results

1. Through this activity, students’ awareness of environmental protection and water conservation will be enhanced, and students’ awareness of participation, practical ability, scientific attitude and cooperative spirit will be cultivated.

2. Through this activity, teachers, students and parents will increase their awareness and attention to water conservation. At the same time, the school saves money by saving water throughout the school.

3. Enable students to correctly understand themselves and develop themselves while actively participating in activities.

Lesson plan for water saving knowledge theme class meeting 2

1. Activity background:

Water is one of the important resources that human beings rely on for survival and development and is indispensable. , irreplaceable special resources. However, with the expansion of population and the rapid development of industry and agriculture, the water crisis caused by the surge in human demand for fresh water and water pollution has had a serious impact on our daily lives. Therefore, it is our duty to save water. responsibility.

2. Purpose of the activity:

1. Understand the important role water plays in the growth of animals and plants and the development of human society, understand the situation of water resources on the earth, and enhance the awareness of water conservation. Consciousness, cultivate students' strong sense of social responsibility and awareness of water resource protection.

2. Educate students to start from me, start from now, develop good habits of saving water in daily life, and persuade others to save water.

3. Strive to be "little water-saving guardians" and "water-saving propagandists" to develop awareness of water conservation.

3. Activity process:

Since we live in the relatively developed southern Jiangsu area, students have long believed that water is “inexhaustible and inexhaustible”. Those who are "exhausted" do not know how to cherish, but waste and squander. We can use various forms such as posters, blackboard newspapers, red scarf broadcasts, and speeches under the national flag to let students understand that our country is not rich in water resources per capita and tap water is not easy to come by. In recent years, more and more areas are experiencing the severe test of drought. Water saving must start from cherishing water and firmly establish the belief that "saving water is glorious and wasting water is shameful". Only then can we pay attention to water saving everywhere and start from Start with the following five aspects and let everyone complete this activity together.

(1) Create a water-saving slogan

Use the Young Pioneers brigade to issue a "water-saving" initiative to all Young Pioneers. Everyone contributes ideas and brainstorms, and each On the basis of individual active creation, each squadron recommends at least three water-saving slogans to the brigade headquarters based on the best ones. The brigade headquarters will make selections on this basis. Each grade will select a number of first, second, and third prizes, and finally select As the school's water-saving slogan, it was made into a banner and hung in a prominent place in the school.

(2) Design a water-saving logo

Each squadron uses art classes to actively ask the art teacher for some methods of logo design, and designs a logo with the characteristics of the class. Water mark, and attach a description under the mark to specifically explain the meaning of this mark.

(3) Watch a water-saving video

Use the school's comprehensive practical activity class or team activity class to watch a water-saving method in other countries or regions through the Internet, so that The team members know that it is not difficult to save water, and it can often be accomplished with just a few clicks. You save a drop of water, and I save a drop of water. For a country with a huge population like ours, it is a lot of water.

(4) Invent a water-saving idea

Through the above three points, the concept of water-saving has been firmly rooted in the minds of the team members. Please observe our daily life carefully. In life, see where you can save water, such as putting a bottle of water or a brick in the water tank without causing the toilet to leak; the water from the bathtub in summer can be used to mop the floor; flush the school regularly Change water tanks into hand-pull water tanks, etc. Find good ideas and promote their use in our homes and schools.

(5) Write a water-saving essay

The school reporters in each class will follow up the entire event and report on it, and let the team members talk about their feelings. , actively write essays and submit articles to "Wujin Daily" and "Changzhou Evening News" to attract the attention of the whole society, achieve the effect of "a single spark can start a prairie fire", and let the whole society join in the water saving activity.

4. Expected results of the activity:

Team members, let us take action, "Save water, start with me", use the "small" me to drive the "big" family, and through The formation of our water-saving behaviors and awareness will radiate to families and society, thereby driving the formation of water-saving awareness and conscious water-saving behaviors among the people of the city, and playing a part in the creation of a national civilized city in Changzhou as small citizens.

Lesson plan for water conservation knowledge class meeting 3

1. Guiding ideology

Based on the actual situation of our school, carry out water conservation publicity activities with the goal of building a conservation-oriented campus. , enhance the water-saving awareness of teachers and students, and enable all teachers and students in the school to develop good habits of saving water in their daily lives.

2. Organizational Leadership

The school established a water conservation leadership group

Team leader: ___

Deputy team leader: ___

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Members: __ ____

Responsibilities of the leadership group:

Responsible for the publicity, organization, leadership and coordination of the school's water conservation work, and monitoring the implementation of the school's water conservation work Supervision and inspection.

3. Activity Content and Arrangement

Saving water is the daily work of the school, and it is also a long-term key task. All departments must closely integrate the "Saving Water, Clean Water, Love Water" "Protect Water" publicity campaign, we must pay close attention to the management, everyone participates, start from scratch, and do a solid job in saving water. The specific arrangements are as follows:

1. The school will hold water conservation activities on March 23 On Monday, Japan used a flag-raising ceremony to hold a launching ceremony for the water law publicity campaign. At the launching ceremony, the "Protecting Water Resources and Ensuring Water Security Initiative" will be read out.

2. Focusing on the theme of "Saving Water, Cleaning Water, Loving Water and Protecting Water", increase publicity and education on water conservation, and guide teachers and students to fully understand the importance of water conservation in schools. , and strive to turn water conservation into a conscious behavior for teachers, students and employees.

3. The Young Pioneers should carry out "strict water resources management" activities throughout the school and use radio to promote water conservation in the form of speeches. Each class should use the class meeting time to hold a class meeting on water conservation before March 27, so that students can establish the concept of "saving water

is glorious, wasting water is shameful" and improve students' awareness of water conservation.

4. Each class must save water starting from me, starting bit by bit from around me, cherishing water, saving water, and protecting water. The Young Pioneers will organize volunteers to serve as "voluntary water conservation supervisors" to supervise water waste and notify those who criticize water waste.

5. The General Affairs Office should intensify the inspection, maintenance and renovation of infrastructure, and make overall plans for water conservation based on the overall long-term development of the school and the construction of a conservation-oriented campus, and adopt appropriate water conservation measures. Water measures should be taken, and problems existing in the work should be solved in a timely manner, sum up experience, strengthen guidance on water conservation work, and ensure the implementation of water conservation work.

4. Work Objectives

Carry out in-depth water conservation publicity activities, enhance the awareness of water conservation among all teachers and students, and ensure that the measures are effective and the results are obvious, so that the school uses more water than the previous year. reduced.

Lesson Plan 4 for Water Saving Knowledge Theme Class Meeting

Design Intention:

Water is the lifeline for our survival. Our country is a country that lacks fresh water resources and is unevenly distributed in time and space. It is also one of the countries with the most scarce water resources per capita in the world. However, China is also the country with the largest amount of water in the world. March 22nd is World Water Day. Saving is not only about saving money, but also about minimizing the consumption of resources to protect our environment and our future.

Activity goals:

1. Let children understand the current situation of the country’s water resources and inspire them to be responsible for saving water and protecting the environment.

2. Knowing how to save water not only starts with me, but also vigorously publicizes it to let everyone know.

Activity preparation:

Pictures, courseware.

Activity process:

1. Introduce the conversation

1. Show the water-saving sign and ask the children to talk about what they saw?

2. Ask the children to talk about whether you used water today? What are the uses of water?

3. How did you use water?

2. Watch the courseware

1. Show a video of wasting water and talk about whether you usually do this.

2. Look at the picture of drought in the land, and ask the children to talk about what they see? (Teacher’s additional explanation)

3. Stimulate children’s sympathy, encourage children to save water, and learn from me Let’s start

1. Play water-saving public service announcements to inspire children’s sympathy.

2. The teacher explains the content of the picture.

3. Teacher: Children, do you think the people living there are pitiful? Do you want to help them? What should we do?

4. Discuss how to save water

Discuss with young children how to save water and what are some good ways to save water?

5. Understand the water-saving signs.

6. Summary of activities.

Extended activities:

Invite children to promote water conservation to their families and people around them, and design a "water saving" logo together with their parents.

Lesson Plan for Water Saving Knowledge Theme Class Meeting 5

In order to implement the "Implementation Opinions on Implementing the Strict Water Resources Management System" issued by the Luyang District People's Government, Luzheng Document No. 20__18, the district The Education and Sports Bureau will carry out the "Cherish Water Resources, Protect Water Environment" activities to enable students in Luyang District to further understand the current status of the earth's water resources, and to cultivate students' awareness and social responsibility in saving water resources, protecting the water environment, and reducing water pollution. , and influence families through students, thereby promoting the formation of national water-saving awareness and conscious water-saving behavior, this plan is specially formulated.

1. Activity time:

20___month_day - 20___month_day

2. Activity requirements:

All units in the district are requested to combine water-saving education activities with students’ social practice activities, educate and organize students to seriously participate in this activity, and report good practices and experiences in the activities in a timely manner.

3. Target audience:

The participants of this activity are primary and secondary schools and kindergartens in the district.

4. Activity content:

1. Carry out a water-saving signature activity;

2. Publish a "Cherish Water Resources, Save Water" blackboard newspaper Special issue;

3. Carry out a class meeting with the theme of "I am a small pacesetter in water saving";

4. Use school windows to promote water-saving activities, and the school joins hands with families to advocate Save water and use schools to vigorously promote water-saving knowledge;

5. Use newspapers, magazines, the Internet, television and other media to conduct extensive publicity.

5. Material summary:

Please send the summary and activity photos to __ mailbox before __ month _, 20__

Contact person : Yan Rucheng, Wang Bibo

Contact number: __

Lesson Plan 6 for Water Saving Knowledge Theme Class Meeting

Activity Goals

1. Let the children Understand the relevant properties of water and its uses.

2. Grow the concept of water conservation and water resource conservation in young children.

3. Develop children’s observation and language expression abilities.

4. Actively participate in the activities and feel the joy of the activities and the joy of success.

5. Develop children’s observation skills.

Key points and problems in classroom teaching

Key points in classroom teaching: Let children understand the relevant characteristics of water and its uses.

Classroom teaching issues: developing children’s observation and language skills.

Activity preparation

1. Bottles, cups, color paste, Coca-Cola, vinegar, and transparent plastic tubes for testing.

2. Hanging pictures of water polluted by the environment.

The whole process of the activity

1. Leading questions:

(1) Teacher: When you had dry mouth, what did __ think of first?

(2) What should you do if your hands are dirty?

(3) Where have you seen ice?

2. Experiment and demonstration :

(1) Put the color paste into the bottle and let the children observe it.

(2) Put vinegar, water, and Coca-Cola into the cups and let the children smell and taste them.

(3) Pour the water from the basin into the cup.

3. Children’s sorting test, draw conclusions:

(1) Water is fluid; (2) Water has no color; (3) Water is completely transparent; (4) Water is odorless.

4. Teacher: Do you know what the main uses of water are?

Summary of children’s discussion: (1) Water use in daily life; (2) Water use in manufacturing and construction; ( 3) Water use by animals and plants.

5. Teacher: There are two parts: water and salt water lakes, and water has a very large use. The water on the earth has been reduced. You should understand and tell the people around you to save water.

Teacher summary:

Water is polluted by the environment and becomes turbid water. The turbid water can be used to water flowers, trees, and crops, but the polluted water has not been resolved. Bacteria and harmful chemicals turn into sewage. Every year, many people around the world get sick or even die from drinking polluted water. Aquatic animals in the water will also suffer damage. Therefore, we must protect the water source and not litter. .

Lesson plan for water saving knowledge theme class meeting 7

Activity name:

Be a good child who saves water

Activity goal:

Raise young children with the awareness of protecting water resources

Activity preparation:

1 pot of dry flowers, 1 pot of water, rag, tape recorder

( The teacher turns off the water gate before the activity)

Activity process:

1. Take a look and think about it: After the game, the teacher guides the children to discover several problems and summarizes the activities in the activity area .

1. Ask a child to answer what she did in the art area. When the child sat down, the teacher asked: "Please wait a moment, I found a question, please put your hands Hold it up, children, did you find anything?" (The child replied: "The hands are dirty, they are all colors -") Teacher: "Okay, later, we will help you solve this problem."

2. Teacher: "It rained a few days ago, which stained the glass in our class and splashed some mud. Later, I would like to ask the children to think of a solution. Can you How about making the glass as clean as before?"

3. At this time, the nursery teacher brought a pot of withered flowers and asked: "Look, children, our class has been on vacation for a few days. Why did this potted flower become like this? The leaves are all - (what is the color? Ask the children to come up and touch the soil.)" Child: "It seems to be sick and about to die." Teacher: "Then let's help it quickly. Save it!"

4. The teacher asked the three children to complete the three tasks respectively and find a way to solve the problem (guide the children to use water to solve the problem, and found that the water was gone.)

2. Talk and listen

1. The teacher first showed great anxiety (expression, movements), guided and inspired the children, and thought about why the water was gone? Maybe it had drained away. !

2. The teacher asked the nursery teacher: "Do you know why there is no water?" Paul: "Oh, about this! When I came to the kindergarten in the morning, I saw the water pipe ticking and the floor drain ticking. It leaked enough to fill a basin, and the little water droplet also said a lot of things to me!" Teacher: "What is it talking about? Children, do you want to know?" (Thinking--) Paul: "Okay, now. Just ask the children to listen to some of the conversations between me and Xiao Shuidi!" (Show a basin of water and play the recording)

3. Teacher: "Oh, so that's it!"

Questions:

(1) Why is there no water?

(2) Where does this basin of water come from?

(3) You see the little water drop is so angry and sad, how can we make the little water drop not sad or angry?

(Inspire children to do what they should do after making mistakes, and express that they should stop wasting water and save water. )

3. Do it, give it a try

1. Inspire the children to use the dripping basin of water to finish what they could not do without water, and talk about their feelings. Strengthen awareness of water conservation and water resource protection.

2. Discussion:

(1) How to be a good child who saves water in daily life

(2) The children in our class all know how to save water. Then I would like to ask you to come up with a good idea when you go home, so that children all over the country can be good water-saving children like you.

3. Opening the water gate, the teacher said: "We also apologized to Little Shuidi just now and promised to save water in the future and stop wasting it. Little Shuidi should not be sad anymore. Have you forgiven us? ?Now let’s go to the bathroom and look for water!”

Lesson Plan 8 for Water Saving Knowledge Theme Class Meeting

Activity Objectives

1. Let children know about water Relevant properties and uses

2. Let children develop the awareness of saving water and protecting water resources

3. Let children experience the joy of success in creation

Activities Preparation

Pure water, electronic pictures (drought, water shortage, earth, desert, water saving icons)

Activity process

1. Riddle introduction

Teacher: Children in preschool, Teacher Xiaoma heard that you are very good and know how to guess

There are many riddles, so today Teacher Xiaoma also brought you an interesting riddle. Children, come Take a guess and see who is the smartest little baby.

(I can’t pick it up with my hands and can’t split it with a knife. I have to ask him to cook and do laundry. - Water)

Teacher: The children are so smart. Guess the answer is water. What does that water look like? Can anyone tell me? (Give the children a glass of pure water to observe)

Teacher: What the children said is really good. Water is colorless, tasteless and transparent. liquid. And we cannot live without water every day. We can do many things with water and it has many uses. Now, children, let’s discuss with each other what are the uses of water? Talk to each other, and then tell us the uses you know. teacher.

Children: drink water, wash face, brush teeth, bathe, wash feet, cook, wash vegetables, wash dishes, mop the floor, water flowers...

Teacher: Wow, there is water With so many uses and so important in our lives, can we live without water? What will happen without water?

(Show children drought and water shortage, people line up to get water, Picture of the land drying up and the grain seedlings dying)

Teacher: What’s going on? What happened? Then why is this happening?

Young: The land is cracking and the grain seedlings are dying. People have no water to drink

Teacher: Then why is this happening?

Young: There is no water

Teacher: Do you know what is there on the earth we live in? How much water? Now let’s look at a picture together (showing pictures of the earth and deserts)

Teacher: The blue things on the earth are oceans, and the yellow and green things are land. Does this mean that we have endless things to say? Before answering the teacher's question, let's first observe the difference between the two glasses of water, and then taste the two glasses of water.

(A cup of boiled water and a cup of concentrated salt water are given to two groups of children to taste)

Young children: (Taste boiled water) It is the same as usual water

(Taste concentrated salt water) It’s very salty and not tasty

Teacher: Most of the water on our planet is sea water, but the salt concentration is too high for us to drink directly. What we can drink is fresh water, which is the water we usually drink. But much of the only fresh water available has been polluted by people. Let’s take a look at these pictures. Can anyone drink from these anymore? (Pictures of water pollution)

Young: No, the water is polluted, the water is dirty, it can’t be drank, birds, fish, shrimps All dead.

Teacher: When fresh water is polluted, it becomes dirty water and cannot be drunk anymore. Moreover, there are many bacteria and toxic substances swimming in polluted water, and small animals in the water will also be harmed, so what should we do?

Young: Save water, protect who’s resources, and don’t go into the water Littering.

Teacher: Yes, that is correct. Since the fresh water resources on our planet are limited, what should we do in our daily lives?

Young: Save water and protect water.

Teacher: What the children said is great, and they have thought of so many ways to save water. But if others forget to save water, how should we remind them?

Young: Make water-saving signs

Teacher: That’s great, let’s do it together now Make water-saving signs to remind everyone to save water!

Reflection on activities

In carrying out water-saving activities, children are more interested. This issue is close to the actual life of children. Through watching The picture shows that water has many uses. Plants need water, animals need water, and we humans also need water. We cannot survive without water. Let children know that it is not okay to waste water. If everyone wastes water and pollutes water, there will be One day we will die of thirst and starvation, inspiring young children's desire to save water. However, the designed classroom capacity is large and involves many knowledge points, which leads to the phenomenon of rushing during the teaching process. The teacher speaks too fast during class, the language used to evaluate students is not rich enough, the expressions are not rich enough, and the affinity when interacting with children is insufficient. Xu will pay attention to improvement in the future teaching process.

Lesson Plan 9 for the Theme Class Meeting on Water Saving Knowledge

Activity Objectives

1. Grow the emotion of protecting water resources.

2. Understand the close relationship between water and humans.

3. Be able to express your thoughts in coherent language.

4. Be willing to try boldly and share your experiences with your peers.

5. Develop the good qualities of daring to think, dare to do, study diligently and be willing to learn.

Important and difficult points of the activity

Understand the principles of water conservation

Understand the relationship between water and human beings

Preparation for the activity

Visit the water plant

Dry potted flowers, dirty dolls, white hats, water, recorders and tapes

Teaching process

1. Guide children to discover problems

1. The teacher sets the topic and the children discuss it

①What should I do if the dolls in the doll house are dirty?

②After finishing the paper crafts, the children’s hands are stained What should I do if the white hat in the small hospital is dirty?

③What should I do if the white hat in the small hospital is dirty?

④The flower is about to dry up, how can I save it?

2. The children proposed a solution to the above problem - use water. Ask the children to go to the bathroom to find water, but found that the water was gone (the teacher turned off the water gate of the bathroom before the activity).

2. Help children explore the reasons

1. Why is there no water?

2. The teacher tells the reason: When I came to the kindergarten in the morning, I saw the tap ticking The dripping water is dripping, enough to fill the basin. The little water droplet said many things, please listen to it.

(Produces a basin of water) Play the recording: "I'm so angry. All the children went home yesterday afternoon, and I was the only one still dripping. I'm so sad! Many people treat me as a treasure. They say that I am very useful and can help people do many things, and no one can do without me. However, some children just don’t cherish me and never turn on the faucet. Look! I was crying all night, and my tears were flowing. I drank a basin. This time I was so sad and angry. I really didn’t want the children to use water anymore.

”

3. Questions

①The little water droplet is angry, what should the children do?

②What would our life be like without water?

③What benefits does water bring us?

3. Guide children to try and discuss

1. Ask children to use this basin of water to do things that they could not do without water just now.

2. After the teacher opens the water gate, ask the children to go to the bathroom to find water and experience the joy of having water.

3. Discussion: How to be a good child who saves water.

Extension activities

Children make posters to promote the need to save water and cherish water

Lesson plan for water saving knowledge class meeting 10

Learning objectives

1. Know the importance of water

2. Discuss ways to save water and cultivate conservation. Water awareness.

Activity preparation

1. Recording of the sound of water

2. Page 18 of the "Beautiful Village" children's book or e-book. .

3. Large drawing paper

Activity process

1. Play recordings of water sounds, such as toilet flushing, rain, and faucet running. Let the children guess what the sound is.

2. Ask the children to talk about the importance of water (people, animals and plants need water to maintain life, including washing things and cooking. Water, etc.)

3. Show page 18 of the "Beautiful Village" children's book or e-book and discuss with the children:

Is Mr. Hippo's bathing method correct? Why?

What did Mama Bear forget?

What should Mr. Hippo and Mama Bear do?

Have you ever wasted water like them?

Are there any ways to save water?

4. The teacher helps the children to write down the ways to save water on the large drawing paper

5. Allow the children to add drawings on the paper. Make a "Water Saving Commitment" and sign it together. The teacher can ask the children to pay attention to the details of life, such as the electronic sensor faucet that will automatically turn on and off the water; the toilet has two flush buttons, one of which can flush a large amount of water. , one can flush a small amount of water, these can save water

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