Effects of Pollution - Lesson Plan Coaches

Students’ Learning Outcomes

· Explain the effects of water, land and air pollution on environment and suggest ways to reduce them.

· Plan and conduct a campaign to bring awareness to a problem of environmental pollution in their surroundings.

Information for Teachers

Effects of water pollution:

· Untreated sewage water contains bacteria causing cholera, typhoid, diarrhea and dysentery.

· Sewage water produces bad smell due to two gases i. e. ammonia and hydrogen sulfide.

· Acid rain, the fertilizers and pesticides contaminate our water and causes killing of fishes.

Effects of Air Pollution:

· Smoke from chimneys causes acid rain and diseases of lunges, skin and eyes.

· Burning of garbage / plastics produces poisonous gases which are lethal for humans, animals and plants.

Effects of Land Pollution:

· Garbage from houses, schools, offices, hospitals are thrown into streets or at open places. These places are used by rats, flies, worms and germs which spread diseases.

Material / Resources

Pictures of different types of pollution from newspaper / magazine etc. Petroleum jelly, clip board, plastic knife. Two small glass jars, vinegar, plant leaves with stem, textbook.

Worm up Activity

· Use pictures of water, land and air pollution and ask students to differentiate among the kinds of pollution.

· Ask students to make a list of causes of air, water and land pollution.

Development

Activity 1

· Half fill a beaker with tap water and another beaker with the same quantity of polluted water of pond, stream or river. Ask the students to compare the two waters for color, smell, transparency and suspended particles.

· Draw the following table on board and fill it with answers given by the students.

· Now ask the following questions from students to conclude this activity.

	Colour	Smell	Transparency	Suspended Particles
Tap water
Water from pond or Stream or River

——Which water will you like to drink?

——What will happen if water of both beakers is mixed?

——If you drink mixed water, will it cause any disease?

——Name some diseases which may spread if the polluted water is used for drinking purpose?

(Expected Ans: Typhoid, Cholera and dysentery)

Activity 2

Divide students into groups and instruct them for the following activity:

· Spread petroleum jelly on three plain papers with the help of a plastic knife.

· Attach one paper to a clipboard and place it outside.

· Place one paper in the classroom under the teachers’ desk.

· Place one paper near window in the classroom.

· After a day or two compare the papers to see how pollution has effected the petroleum jelly placed at the different locations.

· Ask students which paper has the greatest effect of pollution? What does it show?

· Conclude the results through thinking and predictions. Explain the effects of air pollution.

Activity 3

· Divide students into groups and instruct them for the following activity:

· Take two jars and labels one as “water” and fill it with plain tap water.

· Label the second jar “acid water” and fill it with half vinegar and half tap water.

· Dip four leaves completely in each of the jars.

· Observe the leaves after a few days and record your observations.

· Ask students what is the effect of acid water on leaves? What does it show?

· Conclude the results through thinking and predictions and explain the effects of air pollution (acid rain)

Cause of Pollution	Types of Pollution	Effects of Pollution	Ways to reduce Pollution
Burning fuels
Use of fertilizers and pesticides
Sewage water
Garbage waste
Industrial waste
Cutting trees
Burning of plastic

Sum up / Conclusion

· Water may contain bacteria causing cholera, typhoid, diarrhea and dysentery.

· Sewage water produces bad smell due to two gases i. e. ammonia and hydrogen sulphide.

· Smoke from chimneys causes acid rain and diseases of lungs, skin and eyes.

· Burning of garbage / plastics produces poisonous gases which are lethal for humans, animals and plants.

· Garbage from houses, schools, offices, hospitals are thrown into streets or at open places. These places are used by rats, flies worms and germs which spread diseases.

· Involve the students in solving the questions given at the end of chapter / unit in textbook.

Assessment

Ask students to give reasons for the following :

· Pollution may disturb the natural food chain. How?

· Sometimes when you go out, there is fog in winter and things are not visible. Why?

· Sometimes, after rain, the underground water becomes polluted. Why?

Ask students to rewrite the following statements after making corrections.

1. Human beings cause air pollution by using electricity.

2. When solid waste is dumped (underground), it provides home for disease carrying animals such as rabbits and rats.

Follow up

Ask students to conduct a pollution awareness Campaign: Ask them to:

· Make a visit around their homes.

· Enlist types of pollution and causes of each types

· Enlist the ways to reduce these pollutions.

· Go to the neighborhood homes and share the ways to reduce these pollution.

· Submit written reports about the activities they have performed.