The document provides information from a lesson on soil erosion. It includes review questions to check understanding, an activity where students investigate the causes of soil erosion using experiments with soil and water, discussion questions about the activity, and ways to prevent soil erosion. The key points are that soil erosion is caused by water and wind moving soil particles, and can be prevented through methods like contour plowing, terracing, planting vegetation, and reforestation.

1. WEEK 3 Day 1
Data Collected from the Investigation on
Soil Erosion

2. Review
Write the word FACT if the statement is correct
and word BLUFF if it is incorrect.
____1. Soil erosion affects the shape of
our land.
____2. Soil erosion has harmful effects
on plants, animals, and people.
____3. When topsoil is removed by
erosion, soil nutrients remain.

3. ____4. Soil may also cover coral reefs and
endanger or kill marine life.
____5. The construction of roads,
irrigation and other related activities
doesn’t contribute much to soil erosion.

4. Establishing a purpose for the lesson
What covers the
surface of the
Earth?
What is soil made
of?
Why do you think
soil particles are
eroded from the
mound of soil ?

5. Presenting examples/ instances of the lesson
Group Activity: “Let’s Investigate”
Approach: Inquiry- based
Strategy: Experiment
Activity: 3 A’s
I. Problem: What are the causes of soil erosion?
II. Materials: three plastic cups, one peso coin, dipper of water,
water, small basin, newspaper, electric fan, soil
III. Procedures:
1. Fill one of the plastic cups with dry soil.
2. Bury the coin in the soil in the plastic cup. Punch small holes in it.
3. Get the other plastic cup. Punch small holes in it.
4. Put the plastic cup with the soil and the coin in the middle of
a small plastic basin. Do not put water on the basin.
5. Hold the plastic cup with holes about six inches above the
plastic cup with coin and pour water from the dipper to
represent the falling rain. Observe what happens.

6. 6. Get two cups of dry soil and construct a little mound on top of a cardboard on
the floor. Beside the cardboard with a mound of soil.
7. Get a desk electric fan and put it two meters away from the cardboard with dry
soil. Turn on the electric fan in one direction facing the mound of soil. Observe
what happens.
GUIDE QUESTIONS:
1. What did you observe when water started to fall
on the soil?
2. Where did some of the soil particles go?
3. What happened to the coin when you
continuously pour water to the soil?
4. What did you observe with the amount of soil
particles in the basis as you continuously poured
water on the soil?

7. 14. What did you observe with the soil
particles on the cardboard when the fan is
turned on?
15. Where did the soil particles go when they
were blown by the electric fan?
16. How does rain cause soil erosion?
17. How does wind cause soil erosion?
V. Conclusion:
_____________________________________
__________________________

8. Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Sharing of results
Discussing new concepts and practicing new skills #2
From the data that you have collected from the investigation on
soil erosion,
Describe what would happen to the soil after
heavy rains?
What would happen to the soil particles if a
strong wind blows on the place?
How does soil erosion affect us?

9. Developing mastery (Leads to formative assessment
Tell what you have learned on soil erosion.
Making generalizations and abstractions about the lesson
Soil does not stay in one place for a
very long period. It is moved from one
place to another by natural forces like
running water and wind. The process
by which wind and water transport soil
particles and sediment from one place
to another is called soil erosion.

10. Natural Forces that Cause Soil Erosion
Water
Wind
Glaciers
Other Causes of Soil Erosion
Overgrazing of animals
Deforestation
Bad farming or agricultural practices
Activities of people and moving
vehicles

11. Evaluating learning
Fill in the blank with the correct word to complete
the sentence that tells about soil erosion. Choose your answer from
the word inside the box.
Land water wind
Soil erosion soil particles
1-2. The process by which wind and
______ transport soil particles and
sediment from one place to another is
called ________.

12. Land water wind
Soil erosion soil particles
3-4.________ is moved from one place
to another by natural forces like running
water and _________.
5. When a strong wind blows
on__________ without plants or
vegetation, the dry soil breaks apart,
making the lighter particles to be blown
to other places.

13. WEEK 3 Day 2
Enumerating Ways to Prevent
Soil Erosion

14. Review 1
Identify the agents of weathering as shown

18. Review
Clap your hand once if the statement describes
causes of soil erosion and stamp your feet if it is
its effect.
1. When the topsoil is lost, fields
become unsuitable for farming.
2. Loggers cut a good numbers of trees
that hold the soil and much water.
3. When eroded, soil carries pollution-
causing chemicals into lakes and rivers.

19. 4. Much soil coming from barren
hills and mountains is carried away
into rivers, thus occupying some
water parts.
5. Mining operations loosen the
rocks in the mountains.

20. Establishing a purpose for the lesson
What is the girl
doing?
Have you ever
engaged in a tree
planting activity?
What is its
importance?
How can trees help
prevent soil erosion?

21. Presenting examples/ instances of the lesson
Group Activity: “Ways of Preventing Soil Erosion”
Approach: Constructivism
Strategy: Activity Based
Activity: 3A’s
I.Problem: What are the ways of preventing soil erosion?
II. Materials: video clips
https://www.youtube.com/watch?v=Lyad6qVg6N0
III. Procedure:
1. Watch the video clip.
2. Jot down the different ways of preventing the soil erosion.
Guide Questions
1. What is the major environmental problem discussed in the video clip?
2. How do the following help prevent soil erosion?
A. Growing more tress
B. Controlling over grassing of the land by animals
C. Building dams
D. Modern technique of farming
Conclusion:
_______________________________________________________________________

22. Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Sharing of results
Discussing new concepts and practicing new skills #2
Answer these questions:
1. How do trees protect soil?
2. Why is contour flowing or farming by
following the shape of the slope of the hill
and soil tilling help prevent soil erosion?
3. How is reforestation help in preventing
soil erosion?

23. 4. The farmers plow and plant around the
hillside or slopes.
5. The farmers till the land once or twice a year
only to make soil more fertile and good for
planting.
6. Uncontrolled grazing of too many animals
removes the grass cover and packs of the soil
more.
7. The land developers convert farmlands, hills
and mountainsides into subdivision.
8. Covering the soil with plants helps prevent
erosion by wind and running water.

24. Developing mastery (Leads to formative assessment)
Select ways of preventing soil erosion from the
given sentences/statement below:
A. Planting trees in the forest and
non-forest areas.
B. Prevent the water flows by
breaking them with logs, stone packs,
or old tires.

25. Finding practical applications of concepts and skills in daily living
Is illegal logging bad for the
forests? Why?
Why massive campaign against
illegal logging and deforestation
be imposed?
As student, how can you help
prevent soil erosion?

26. Making generalizations and abstractions about the lesson
What are the ways to prevent soil erosion?
1. Contour Plowing- it is the process
done by farmers in making furrows,
following the shape of the slope of the
hill.

27. 2. Soil Tilling- the farmers till the land
once or twice a year only to make the
soil more fertile and good for planting.

28. 3. Terracing- one of the most famous
terraces in the world is the Banaue Rice
Terraces. It is one of the eight wonders
of the world.
BANAUE RICE TERRACES

29. 4. Strip cropping- it is a process of
growing tall and short crops in alternate
strips to break the wind.

30. 5. Crop Rotation- is a farming practice
where crops planted are different every
planting season. In this way, the soil
nutrients are being replenished.

31. 6. Planting Vegetation

32. 7.Reforestation- the process of
replanting an area with trees

33. Evaluating learning
Write PE if the statement describes way
of preventing soil erosion NT if not.
___1. Growing more trees.
___2. Controlling over grassing of the
land by animals.
__3. Planting different types of crops at
the same land.

34. __4. Raindrops falling on the soil exert
pressure with their weight.
__5. Massive campaign against illegal
logging and deforestation.
Additional activities for application or remediation
Conduct a survey on how people
in your community help prevent
soil erosion.

35. Week 3 day 3

36. 1.Which of the following best
describes a rock?
A. Solid and organic material
B. Solid and inorganic material
C. Solid and liquid organic
material
D. Liquid and inorganic material.

37. __2.In your science activity, you
observed that some rock samples
are big while others are small. Your
observation clearly shows that the
rocks may differ in ______.
A. Color
B. Hardness
C. Shape
D. Size

38. __3.While doing the activity, you
observed that some rocks can be
scratched by other rocks. This
shows that rocks differ in _____.
A. Size
B. Color
C. Hardness
D. Shape

39. ___4.In your science class, you were
able to observe that rocks differ in
size, color, shape, texture and
hardness. This observation shows
that rocks _______.
A. Maybe soft or hard
B. Maybe light or dark – colored
C. Maybe big or small
D. Have different characteristics

40. __5.Which of the following tends to
cause physical or mechanical
weathering?
A. Animal that burrow in the
ground
B. Root of plants growing into
the cracks in the rocks
C. Water that sleeps into the
pores and cracks of rock
D. All of these

41. __6.Which of the following occurs
when acidic water caused the rocks
to break producing clay and soluble
salts?
A. Carbonation
B. Oxidation
C. Hydrolysis
D. Erosion

42. __7.How does temperature weather
rocks?
A. Rocks are heated and cooled
continuously
B. Rocks are cooled
tremendously all the time
C. Rocks are heated greatly all
the time
D. Rocks are at different
temperature

43. ___8.Plant serves as agents of
weathering. Which of the following
statements support this idea/
A. Falling of leaves cause rocks to
break
B. Decaying trunks of plants cause
the rocks to break
C. Root of plants that grow in rocks
and cause them to break
D. Branches of plant cause the rocks
to break when blown by the winds

44. ___9.Why do sedimentary rocks are
important to geologist and
archeologist?
A. They serve as decoration
B. They used it to make a jewel
C. They used it to study the
structure of things that existed in the
past
D. They serve as collection

45. __10.Which of the following
would not use rocks and
minerals?
A. Jewelry
B. Building
C. Electrical device
D. Ceramics

46. __11.What could be a problem with
a monument made from chalk?
A. It wouldn’t float.
B. It couldn’t be shaped.
C. It could crumble over time
D. All of the above

47. ___12.Landslides on mountain
slopes show the force of
A. Gravity
B. Wind
C. Runoff
D. Running water

48. ___13.What makes the water
muddy after a heavy rain?
A. The pebbles picked up by
water
B. The rainwater turned brown in
color.
C. The gravel and sand carried by
the water.
D. The fine dust particles
dissolved in water

49. __14.How can trees help prevent
erosion?
A. The roots hold the soil firmly
together.
B. The trees block the way of
running water.
C. The roots absorb the water at
once.
D. The roots secrete acid,
attacking the rocks

50. ____15. When is a wind an agent
of erosion?
A. When is breaks rocks into
pieces.
B. When it carries rock pieces to
other places.
C. When it stops picking up
rocks.
D. When it presses down on
rocks.

51. ___18. Planting different types of crops
at the same land.
___19. Raindrops falling on the soil exert
pressure with their weight.
___20. Massive campaign against illegal
logging and deforestation.

52. ___21. When the topsoil is lost, fields
become unsuitable for farming.
___22. Loggers cut a good numbers of
trees that hold the soil and much water.
___23. When eroded, soil carries
pollution-causing chemicals into lakes
and rivers.

53. ___24. Much soil coming from
barren hills and mountains is
carried away into rivers, thus
occupying some water parts.
___25. Mining operations loosen
the rocks in the mountains

54. Write the word FACT if the
statement is correct and word
BLUFF if it is incorrect.
___26. Soil erosion affects the
shape of our land.
__27. Soil erosion has harmful
effects on plants, animals, and
people.

55. __28. When topsoil is removed by
erosion, soil nutrients remain.
__29. Soil may also cover coral
reefs and endanger or kill marine
life.
__30. The construction of roads,
irrigation and other related
activities doesn’t contribute much
to soil erosion.

56. Key to correction
1.B
2.D
3.C
4.D
5.D
6. C
7.A
8.C
9.C
10.c
11.C
12.c
13.d
14.a
15.B
16. PE
17.PE
18.PE
19.NT
20.PE
21.X
22./
23.X
24.X
25./
26. Fact
27.Fact
28.Bluff
29.Fact
30.Bluff

57. WEEK 3 Day 4
Differentiating Weather from
Climate

58. Review
Write True if the statement is correct. If
False, change the underlined word or
phrase to make the statement true.
______ 1. Evaporation results
when water absorbs heat from
the sun.
______ 2. Water condenses when
water vapor releases heat.

59. ______ 3. When air becomes
colder clouds form.
______ 4. Rain that falls to the
ground may sink into the ground
or flow on the surface as runoff.

60. Establishing a purpose for the lesson
Let pupils read this:
“ Whether the weather be fine,
Whether the weather be not,
Whether the weather be cold,
Whether the weather be hot,
We will weather the weather
Whether we like it or not.”
What does the rhyme imply?
What is the weather today?
How about the climate in your place?
Are they different? Let’s find out.

65. Presenting examples/ instances of the lesson
Group Activity: “Weather vs. Climate”
Approach: Integrative
Strategy: Scaffold- knowledge Integration
Activity: 4 A’s
XIX. Problem: Can you differentiate climate from weather?
XX. Materials: video clip, activity sheet
https://www.youtube.com/watch?v=rGWLT8_89m8
XXI. Procedure:
15. Watch the video clip.
16. List down the differences between weather and climate.
Guide Questions:
i. What are the factors that affect the weather?
j. What are the elements that make up the weather?
k. Why do we need to know the weather for the day?
l. How do you call the weather for a long period of time?
m. What factors decide the climate?
n. What are the earth three climate zones?
o. Why is weather more complicated than climate?
p. How is climate different from weather?
XXII. Conclusion:
__________________________________________________________________________
__________________________________________________________________________

66. Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Sharing of results
Discussing new concepts and practicing new skills #2
(Teacher may give additional information about the differences between climate and
weather)
4. Answer these questions:
1. Is weather changing?
2. Can you differentiate the elements of
weather from one another?
( temperature, precipitation, winds,
clouds, moisture, and air pressure)

67. 3. Why are differences in climate from
place to place?
4. Philippines is located at the Southern
Asia which has two kinds of climate? Can
you name these? ( amihan and habagat)
Developing mastery
Tell whether the statement describes the
weather or climate.
____1. It is the temporary condition of the
atmosphere in a given place at a particular
time.

68. ___2. It is what the forecaster on the
TV news predict each day.
___3. Is the combination of
temperature, moisture, wind and
sunshine at a place over a period of
years.
___4. It is how the atmosphere
“behaves” over a period of time.
___5. It varies from day to day

69. Finding practical applications of concepts and skills in daily living
Why do we have to know the weather for the
day?
Life is like weather. Sometimes it
is bright and shiny, and sometimes it
is dark and gloomy. There are always
storms and misunderstandings from
time to time. To weather the storms
mean overcome some difficulties or
problems in our lives.

70. Making generalizations and abstractions about the lesson
What are the differences between weather and climate?
Weather > the day to day or time to time
condition of the atmosphere in certain
area.
> It affects our daily activities.
> The weather is fine when the sky is
bright, sunny, with few clouds, and no
rain; it is fair when there are clouds and
rain may occur in isolated patches,

71. > Through the use of modern
weather equipments, meteorologists are
able to predict weather conditions at any
given time. Knowing weather changes
help us plan worthwhile activities. We
can also prepare better during harsh
weather conditions. In this way we can
save lives and prevent damage to
properties.

72. > Climate is the total weather
conditions in a region over a longer
period of time. The weather at a certain
place such a Manila may be cold and
have a warm, dry, sunny climate. Climate
is the combination of temperature,
moisture, wind and sunshine at place
over a period of years. The study of
climate is called climatology and scientist
is known as a climatologist.

75. Evaluating learning
Write W if the statement describes the
weather and C if it describes the climate.
___1. It happens at a very short
period of time-even only for a day.
___2. It occurs for a long period of
time.
___3. It is the average weather in a
place over many years.

76. ___4. It varies from day to day and from
one place to another.
___5. Is the combination of temperature,
moisture, wind and sunshine at a place
over a period of years.
Additional activities for application or remediation
Observe the weather conditions for one week.
Record your observation in a table.

77. Week 3 Day 5
Describing the Different Weather Disturbances

78. Review
Can you differentiate weather from climate?

79. Establishing a purpose for the lesson
Recall what happened when you saw a flash
of lightning from a distance.
You heard thunder, wind blew ,
and it rained hard. That was an
experienced of just one weather
disturbance. What do you call it?

80. Presenting examples/ instances of the lesson
Group Activity: “Types of Weather Disturbance”
Approach: Collaborative
Strategy: Peer Teaching
Activity: AFA
(The teacher pre- assigned the group and the topic to be discussed by each group.
Teacher should check first the output of the group)
I. Problem: What are the types of weather disturbances?
II. Materials: chart or Powerpoint presentation or video
presentation can be used by the reporter of each group
III Procedure:
a. Listen to each group report.
b. Understand and jot down important facts about the different
weather disturbances.
Group I- Storm
Group II- Thunderstorms
Group III- Hurricane and Tornadoes
Group IV- Tropical Cyclone

81. Group 1
A storm is any disturbed state of
an environment or astronomical body's
atmosphere especially affecting its
surface, and strongly implying severe
weather. It may be marked by significant
disruptions to normal conditions such as
strong wind, tornados, hail, thunder and
lightning (a thunderstorm), heavy
precipitation (snowstorm, rainstorm),
heavy freezing rain (ice storm), strong
winds (tropical cyclone, windstorm), or
wind transporting some substance
through the atmosphere as in a dust
storm, blizzard, sandstorm, etc.
The English word comes
from Proto-Germanic *sturmaz meaning
"noise, tumult".[2]

82. Group 1 -thunderstorm
Thunderstorms are small,
intense weather systems that make
strong winds, heavy rain, lightning,
and thunder. Thunderstorms can
happen anywhere with two
conditions: the air near the Earth's
surface must be warm and moist
(with lots of liquid), and the
atmosphere must be unstable.[1]
100 lightning bolts hit the earth
every second, and at any one
moment, about 1,800
thunderstorms happen around the
earth.[2]
Thunderstorms are rare in
cold weather. When they happen, it

83. Group 1 - tropical cyclone
A tropical cyclone is a circular air
movement over the warm ocean waters in the warm
part of Earth near the equator. Most tropical
cyclones create strong winds and heavy rains. While
some tropical cyclones stay out in the sea, others
pass over land. They can be dangerous because of
flooding and because the winds pick up objects,
including things as big as small boats. They can throw
these things at high speeds.
Tropical cyclones, hurricanes or typhoons
form when convection causes warm, moist ocean air
to rise. They begin as a group of storm winds when
the water gets as hot as 80 °F (27 °C) or hotter. The
Coriolis effect made by the Earth's rotation causes
the winds to rotate. Warm air rises quickly and then
it gets pushed aside as it cools. These storms usually
move westward in the tropics, and later move north
or south into the temperate zone. The "eye of the
storm" is the center. It has little rain or wind. The eye
wall has much rain and the strongest winds. It is
surrounded by rain bands and an area of strong
winds.

84. Group 1 - tornadoes
A tornado is a rapidly rotating column of
air that is in contact with both the surface of the
Earth and a cumulonimbus cloud or, in rare cases,
the base of a cumulus cloud. They are often referred
to as twisters, whirlwinds or cyclones,[1] although
the word cyclone is used in meteorology to name a
weather system with a low-pressure area in the
center around which winds blow counterclockwise in
the Northern Hemisphere and clockwise in the
Southern.[2] Tornadoes come in many shapes and
sizes, and they are often visible in the form of a
condensation funnel originating from the base of a
cumulonimbus cloud, with a cloud of rotating debris
and dust beneath it. Most tornadoes have wind
speeds less than 110 miles per hour (180 km/h), are
about 250 feet (80 m) across, and travel a few miles
(several kilometers) before dissipating. The most
extreme tornadoes can attain wind speeds of more
than 300 miles per hour (480 km/h), are more than
two miles (3 km) in diameter, and stay on the ground
for dozens of miles (more than 100 km).

85. Discussing new concepts and practicing new skills #1
Group Reporting / Presentation of the Output
Sharing of results
Discussing new concepts and practicing new skills #2
Answer these questions:
What are the characteristics of storm?
What are the most common types of
weather disturbance?
Where does a hurricane form?
Why it is considered the most violent
storms on Earth?

86. Why it is considered the most violent
storms on Earth?
What is it several names?
How does it rotate?
How are tropical cyclone classified?
How do tropical depression, tropical
storm and typhoon differ?
How will you describe a tornado?
Why it is considered incredibly
destructive?

87. Developing mastery (Leads to formative assessment
Complete the concept map

88. Finding practical applications of concepts and skills in daily living
What type of weather disturbance have
you experienced?
How did it affect you and your family?
What are their differences?
Storm- is a violent disturbance in
atmosphere marked by sudden
changes in air pressure and rapid air
movements.

89. Thunderstorm – is a localized storm
cloud that produces thunder and
lightning.
It is one of the most common
types of weather disturbances that is
experienced in the country.

90. Hurricane - is a tropical storm with
sustained winds of at least 120km/hr.
> considered the most violent
storms on Earth, have several names
depending on the location
where they are formed.
1. When winds in a tropical cyclone
occurs in the Atlantic or central Pacific
Ocean, it is called a hurricane.

91. 2. In western Pacific Ocean in some
parts of asia like Phillipines, weather
disturbances that occur are referred
to as typhoons.
3.In the Indian Ocean, they are
called cyclones.
Hurricanes rotate in a counterclockwise
direction around an “eye.” The center of
the storm or “eye” is the
calmest part. It has only light winds and
fair weather.

92. Tropical cyclones are areas of low pressure
that contains rising warm air.
Classification of tropical cyclone
according to maximum speed:
1. Tropical depression- has maximum
sustained wind speed of less than 63 kph.
When it gains speed, it becomes a storm
and eventually a typhoon.

93. 2. Tropical storm- has
maximum sustained wind speed
which ranges from 63 to 118 kph.
3. Typhoon- has a wind speed
greater than 118 kph

94. Evaluating Learning
Identify the type of weather disturbance being
described below: Choose your answer from the word
inside the box.
Tornado tropical cyclone
storm hurricane thunderstorm
____1. It rotates in a counterclockwise
direction around an” eye “.

95. Tornado tropical cyclone
storm hurricane thunderstorm
___2. It is localized storm cloud that
produces thunder and lightning.
___3. A violent disturbance in
atmosphere marked by sudden
changes in air pressure and rapid air
movements.

96. Tornado tropical cyclone
storm hurricane thunderstorm
___4. These are classified into three
according to the maximum speed of
the wind near the center..
___5. A whirling, funnel-shaped
windstorm, which often develops from
a thunderstorm.

97. Additional activities for application or remediation
Research on the effects of weather
disturbances to people.
Write your report on a piece of
short coupon bond.