This document discusses diseases that can result from exposure to decaying materials. It describes an activity where students observe pictures of places with waste materials and discuss the possible illnesses people living there may experience. Some key diseases mentioned are allergy, cholera, malaria, typhoid, dysentery, and skin diseases like ringworm and scabies. The document emphasizes that practicing good hygiene, like washing hands and boiling water, can help protect people living near dumpsites, rivers, or canals from getting sick.

2. Good
Afternoon!

3. Diseases/ Sickness Resulting
from Exposure to Decaying Materials
LESSON 4

4. Objectives:
Duration: 2 days
1. Identify the diseases/sickness that may
result from exposure to decaying materials.
2. Describe the diseases/ sickness that may
result from exposure to decaying materials

5. You have identified the materials that
undergo decay in yesterday’s lesson
REVIEW:

6. Name the characteristics of these
materials.

7. Do you think these materials can make
us sick? What possible disease can we
get if we are exposed to these
materials?

8. Our activity today will help you
describe the kind of diseases/ sickness
that decaying materials can bring us

18. GROUP ACTIVITY
What to do:
1. Visit the gallery prepared by your teacher
inside your classroom.
2. Examine the five pictures displayed in the
gallery.
3. Describe what you see in each picture.
4. Record it on your science
notebook/portfolio.
5. As soon as you are done observing, go
back to your group and discuss your findings with
them.
6. Organize your findings in the chart below

19. Place where
the family
lives
Waste
materials
seen in the
surrounding
s
Pest breeding
in the
surroundings
Possible
illness
resulting from
exposure to
decaying
materials
dumpsite Empty plastic
bottle
files allergy

20. Guide Questions
1. What are the waste materials seen in the
surrounding?
2. How are the waste materials disposed?
3. What are the pests dwelling in the place?
4. Why do you think those pests like to breed in
dirty place?
5. What illness could the people living near the
dumpsite and squatters’ area acquire?
6. What could be the possible causes of the
illness acquired by the family living there
7. What did you learn in this activity?

21. • Decaying materials are waste may cause
harm to one’s health.
• Waste is any materials that is no longer
usable and is thrown away.
• There are common ailments that may result
from being exposed to decaying materials.
Some of these are allergy, cholera, malaria,
typhoid, dysentery and some skin disease
such as ring worm and scabies.

22. • Malaria and dengue are diseases spread by
specific type of mosquitoes. They become
epidemic in places where these type of
mosquito breed.
• Typhoid- is a waterborne disease. People who
drink polluted water can become infected with
typhoid. The garbage in this area is a good
breeding place for flies. The flies can carry the
disease and infect more people.
• Dysentery is a disease that can cause severe
diarrhea. If not treated properly someone can
die from it. This is a waterborne disease that is
transmitted to a person when they drink
polluted water.

23. • How could people living in areas
near dumpsite, esteros or canals be
protected from getting sick?
(Proper disposal of waste should be observed in areas
near dumpsites esteros or canals be prevent them
from too much exposure to garbage that will result to
danger.

24. Good hygiene practices such as washing of
hands, boiling of water, avoidance (if
possible) or exposure to air

25. 1. How did you find the
activity?

26. 2. What kind of waste materials
are found in dumpsite, canals or
esteros?
(garbage ,materials such as plastic

27. 3. Describe the surroundings in
every picture.

28. 4. Are there pests? What are
the common pests seen in the are?
(flies, mosquitoes, rat and cockroaches)

29. 5. What can you say about the
family living in those areas?
(They are exposed to garbage)

30. 6. What can you say about the old
man in the picture? Describe him
(The old man is sick.)

31. 7. What can you say about the
boy? What kind of illness does the boy
have?
(The boy is sick with allergy)

32. 8. What did you learn from the
activity
(The boy is sick with allergy)

33. Evaluation
1. If you are exposed to decaying materials,
what could be its result to your health?
2. Explain why decaying materials affect one’s
health and safety.

34. Assignment
Look for a place in your community
where people practice proper waste disposal
(e.g. place where there is a Material Recovery
Facility. Interview them and prepare a report
you have visited.