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  2009-4-10 lúc 11:36:31   
Lan 
[Member]
Tham gia ngày: 2009-2-7
Số bài viết: 1278
http://www.lessonplanspage.com/SciencePollution.htm
Subject: Science
Title: Causes of Pollution
by Tracey L. Churchman, Lake Charles, Louisiana
Grade Level: Kindergarten through Third Grade
Overview: During the past hundred years, due to new technologies, the world has changed in many ways. Some changes have improved the quality of life and health for many people. Others have affected peoples health care adversely causing different kinds of pollution that have harmed the environment.

Purpose: As the future of our country, children need to be able to identify the types of pollution, the sources of the pollution, and how they can protect the environment from further pollutants.

Objectives: The student will be able to :
1. Identify and discuss different kinds of pollution.
2. Identify and discuss sources of pollution.
3. Discuss and explain why it is important to keep the
environment free of pollution.
Resources/Materials Needed: lesson vocabulary cards, photographs of water, air, and land pollution, chart paper, "Let's Stop Pollution" poster, posterboard, crayons, markers, variety of sizes of cardboard boxes, poster or tempera paint, Kleenex, soap, water, variety of pollution bumper stickers.

Activities and Procedures:

The Teacher:

1. Begin the activities by displaying and reviewing the lesson vocabulary. (pollution, surroundings, litter, environment)

2. Discuss the displayed pictures of water, air, and land pollution. Have students identify what is wrong in each of the pictures displayed. Write the students responses underneath each of the pictures. Remind the students that pollution is anything that harms our surroundings and that people cannot survive without clean air, water, and land. Stress that pollution is a responsibility and concern of all people in every community.

3. Ask students to "Brainstorm" to complete a list of ways that they can help to stop pollution. Examples: not put garbage into the lakes and streams, walk or ride bikes whenever possible, pick up litter). List the students responses on a poster titled "Let's Stop Pollution". Stress that because so many important things in the surroundings are shared by people in other communities, everyone must work to stop pollution of the air, water, and land. Students will then have a variety of activities to teach them about the causes and effects of pollution.

1. Provide students with a half sheet of posterboard and crayons. Have them make a poster to inform others about pollution. Display the posters around the school.

2. Provide students with boxes and paint. Have them make "litter boxes" with labels and decorations that state why it is important not to litter. Place the boxes in areas around the school or home.

3. Have students wash the outside of a window that is easy to reach. A few days later, let them wipe the same window with a clean tissue. Discuss possible reasons the window became dirty.(air pollution)

4. Provide students with materials to make replicas of bumper stickers illustrating warnings and laws concerning pollution. Suggestions: NO LITTERING, NO TRUCKS, NO DUMPING, NO BURNING.

5. Fieldtrips to local companies or industries that deal with pollution prevention.

6. Guest Speakers on pollution prevention and/or environmental safety.

Tying it all Together: During the entire period of this unit, students will be encouraged to continue to add to the list of ways to stop pollution. As the lesson evolves and the students begin to understand the harms of pollution, the list will grow. As the culminating activity, the children will take one of the solutions to pollution and present it to the entire class.



 
  2009-4-10 lúc 11:50:56   
Lan 
[Member]
Tham gia ngày: 2009-2-7
Số bài viết: 1278
http://pbskids.org/eekoworld/index.html?load=air_water

Web site for kids about pollution.


 
  2009-4-11 lúc 9:1:15   
phuonglinh 
[Member]
Tham gia ngày: 2009-3-26
Số bài viết: 20
chi oi co giao an nao hay ve đề tài nước chỉ em với


 
  2009-4-11 lúc 9:2:14   
phuonglinh 
[Member]
Tham gia ngày: 2009-3-26
Số bài viết: 20
chao chi Lan.bay gio ben đo la may gio vay chi
hom nay chi ko đi làm hả?


 
  2009-4-11 lúc 18:41:16   
Lan 
[Member]
Tham gia ngày: 2009-2-7
Số bài viết: 1278
Chị được nghỉ lễ thứ Sáu và thứ Hai. Lễ Easter=Phục Sinh.

Còn đây là water.
http://pbskids.org/eekoworld/index.html?load=air_water


 
  2009-4-11 lúc 19:3:33   
Lan 
[Member]
Tham gia ngày: 2009-2-7
Số bài viết: 1278
Title - Pollution Lesson Plan
By - Cissy Condrey
Primary Subject - Science
Grade Level - Elementary

Objective: Students will learn the answers to the following questions:

What is pollution?
Which liquids mix with water?
Which liquids won't mix with water?
Anticipatory Set: It is important for students to understand that:
Pollution in our oceans, lakes, rivers and streams is a very serious matter. Pollution is when we add things to the ground, the air, or the water that will make it dirty or will bring harm to the life in and around it. People often dump liquids into oceans, lakes, rivers and streams. Some of these liquids will mix with water; others will not.
Procedures and Activity:
Begin experiment by asking the guiding questions:

1. What is pollution?

Share ideas about examples of pollution. Then try to come up with a definition. Help them see that pollution is making something dirty or unsafe for life. Lead into thinking about water pollution. Talk about our oceans, lakes, rivers, and streams. What have they heard or read about pollution in these water bodies? Do they ever think about whether or not the water they swim in is safe? Have they ever been concerned about the fish we eat being poisoned and harmed from living in polluted water?

2. Which liquids mix with water?

One big problem is that too often our oceans, lakes, rivers and streams can look like they are safe and clean when in fact they are not. Some of the solids and liquids we are dumping into water will mix up with the water so we cannot see them with just our eyes. Some things we put into water will not mix and we can see evidence that they are there. What we cannot see is a big problem!

3. Which liquids won't mix with water?

Today we will do an experiment by making an "ocean in a bottle." We will try mixing different liquids with water to see what will and will not mix. In particular, we will see if oil or detergent will mix with water. Do you think we should drink in water with oil and/or detergent in it? Are these two liquids harmful to plant life, fish or other creatures? Oil and detergents are two common liquids that get dumped into our waters.
Activity:
1. Make a "bottle ocean."

Each student or pair should put 3 cups of water into their clean 2-liter bottle. This is like a little ocean, lake, river, or stream.

2. What happens when oil is mixed with water?

Add 1 cup of oil by pouring it into the bottle via the funnel. Screw top on bottle. Mix up the liquids by shaking the bottle. Observe what happens. We observe that oil and water will not mix. We call liquids that will not mix with each other immiscible. What do you think happens when there are oil spills in the oceans? How will oil affect the water, the fish, plant life or animals that live near the water?

You may want to leave the bottle tipped on its side overnight. The next day, see if the oil settled or not. How would this impact our knowing that oil existed in an ocean or lake? How would this help us think about cleaning up oil spills?

3. Remove oil and water mixture and rinse out bottle. What happens when soaps and detergents are mixed with water?

Put 3 cups of water in the clean 2-liter bottle. Add 1 cup of dish soap or liquid laundry detergent via the funnel. Screw top on bottle. Mix up the liquids by shaking the bottle. Observe what happens. We observe suds, bubbles and foaming. Do the two liquids combine? When two liquids will mix with each other, we call them miscible.

You may want to leave the bottle tipped on its side overnight. The next day, is the detergent still mixed up with the water or did it separate? Can you still see the foaming and suds? How does this impact our thinking about soapy kinds of pollution?

4. What happens when oil and soap are mixed with water?

Empty, rinse and clean the bottle. Add 3 cups of water, 1/2 cup of oil, and 1/2 cup of soap or detergent. Screw on top. Shake the bottle to mix the liquids. Look at what happens. Can you see evidence of the oil and soap? Observe what goes on in the bottle over a period of time. You will find that oil will mix with soap and then with water. This makes it very dangerous for our water systems. Oil can be present and we don't really see it because it got mixed up and broken down with soap and water.

Compare this to trying to wash an oily pan after cooking with it. If you try to use just water, the oil won't come off. But when we add a little dish detergent, we can get rid of the oil.

http://www.lessonplanspage.com/ScienceOilAndDetergentWaterPollution15.htm


 
  2009-4-11 lúc 20:2:20   
Lan 
[Member]
Tham gia ngày: 2009-2-7
Số bài viết: 1278
http://www.youtube.com/watch?v=yU7HtSbHz1A
Ô nhiễm nguồn nước.

http://www.youtube.com/watch?v=5CcO6qnEEro&feature=related
http://www.youtube.com/watch?v=m5zVASa0u9g&feature=related
http://www.youtube.com/watch?v=7KuP6x0Ushc&feature=related
http://www.youtube.com/watch?v=a-x0AJQ5zHQ


 
  2009-4-12 lúc 11:40:18   
phuonglinh 
[Member]
Tham gia ngày: 2009-3-26
Số bài viết: 20
c

 
  2009-4-12 lúc 11:42:6   
phuonglinh 
[Member]
Tham gia ngày: 2009-3-26
Số bài viết: 20
co chi nao giup em tìm powerpoint về quá trình hình thành of nước với!!!!


 
  2009-4-12 lúc 19:33:48   
Lan 
[Member]
Tham gia ngày: 2009-2-7
Số bài viết: 1278
Phuonglinh lấy hình để vào power point, viết nội dung rồi thu âm vào.
http://www.kidzone.ws/WATER/
Water Cycle Activity Pages có hình để in ra và chỉ các hoạt động để chứng minh sự hình thành của nước.


 
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