1. EFFECTS OF THE SUN’S HEAT AND
LIGHT ON EARTH
-Good and bad effects of heat and light from the sun
- Ways to protect oneself from the sun’s heat
Prepared by : Shirley Puaso-Valera
Grade 3 –St. Francis / St.Augustine / St.Maria Goretti
SY 2013 - 2014

2. Key Questions
A. How is life without the
sun?
B. How is the life on earth
affected by the sun?

3. Objectives
•
Infer that the sun gives heat and light to
the earth.
Identify the good and bad effects of
heat and light from the sun.
• Analyze how the heat and light from
the sun affect the life on earth.
•
• Give
ways or practices to protect
oneself from the sun’s heat.

4. Word puzzle
Circle the words that is
related with the effects
of sun’s heat and light
on Earth

5. Word puzzle
A
D
V
W
X
Y
Z
V
B
L
I
G
H
T
E
W
C
E
T
S
H
D
A
X
P
L
A
N
T
V
R
A
H
G
M
A
B
C
T
Y
E A T
F H I
I N J
P M K
O N L
O R Y
H E M
X G F

6. Fast Sharing
Share what you know about the sun
and its effect to the life on earth.

7. Group Activity
Activity 10.1” Heat and Light from the
sun” Group presentation follows.
Discussion on their responses

8. Group Activity
Activity 10.1 HEAT AND LIGHT FROM THE SUN
I. Problem: Why do you need the heat and light from the sun?
II. What You Need: the illustration of a mother carrying her child , exposing the child to sunshine
early morning
III. What To Do:
1. Observe the picture.
2. Describe what the baby is doing.
3. Describe where the baby is placed.
IV. What have you found out?
1. Where is the baby placed by her mother? _______________________________________
__________________________________________________________________________
2. Why is the baby exposed to sunshine early in the morning _________________________
__________________________________________________________________________
V. Conclusion:
What does one get from heat and light from the sun?
____________________________________________________________________________
__________________________________________________________________________

9. Group presentation
.

10. Doctors advice mothers to take their babies
under early morning sun.
The sun helps in producing vitamin D. If
exposed to sunlight to the right amount of
sunlight in the morning, there is a
substance under the skin that changes into
Vitamin D.
Vitamin D helps in the proper development of
bones and teeth

11. Brainstorming
Game

By partners: list down all the benefits you
can get from the sun. You can also
illustrate your answers in a manila paper.
Volunteer pairs will share their work in
front of the class. Discussion on the
responses of the learners.

12. Diagran presentation
Beneficial effect of sun’s heat and light to the life on
earth.

13. Diagram
Presentation
Presentation on the
following diagram
to deeply tackle
the beneficial
effects of sun’s
heat and light to
the life on earth.
a. process of
photosynthesis

14. Diagram
presentation
b. animals and
human beings
were able to see
because of light
coming from the
sun

15. Diagram
presentation
c. clothes
being
dried
under
the sun

16. Diagram
presentation
d. water cycle

17. Diagram
presentation
e. sun as a source of vitamin
D

18. Question
Activity
When are these things (umbrella , cap ,
sunglasses ) used?
Why should you wear these things on sunny
day?
What do you usually feel when you stay too long
under the sun?
What can happen if you will be exposed to
the sun?

19. Harmful effects of the sun’s heat in
the environment and to living
things
1.Excessive heat from the
sun can burn our skin .
Our skin gets red and
becomes painful. This
condition is called
sunburn. Continuous
overexposure to
sunlight may even lead
to skin cancer.

20. Harmful effects of the sun’s heat in
the environment and to living
things
2.Too much
exposure to
the sun’s rays
may result in
headache and
nosebleed.

21. Harmful effects of the sun’s heat in
the environment and to living
things
3. We should not
look directly at
the sun, it can
make us
temporarily
blind

22. Harmful effects of the sun’s heat in
the environment and to living
things
4. The sun’s heat and the
warm air make us perspire
a lot. Too much
perspiration can make us
lose much water. This may
lead to dehydration , which
often results from
overexposure to the sun.

23. Group activity

Sharing ideas on how to take
care of their body against the
rays of the sun. Sharing their
answer on class. Discussion
on the result of the activity.

24. Protecting Oneself from the
Sun’s Heat
Use sunglasses
when you stay
under the sun
.They can protect
your eyes from
the sun’s heat and
radiation

25. Protecting Oneself from
the Sun’s Heat
Drink lot of water.
Drink at least 8
glasses of water or
more.

26. Protecting Oneself from
the Sun’s Heat
Before swimming
under the sun,
make sure you
put some
sunblock lotion on
your skin to
lessen sunburn

27. Protecting Oneself from
the Sun’s Heat
Use hat , an
umbrella, or
any cover for
the head to
protect you
from the sun’s
rays.

28. Protecting Oneself from the
Sun’s Heat
Use longsleeved clothes
when working
under the sun
to avoid too
much exposure
to the sun’s

29. Generalization
Pupils will give a two-sentence explanation of
the learning they have for the day.
• The sun influences all objects in the solar
system. The energy coming from the
sun has its good and bad effects to the
life on earth.
• All life on earth depend on heat and
light from the sun.

30. Generalization
The sun is the main source of
light.
The heat and light from the sun help
plants and animals grow.
Although sunlight has many good
effects on us, one should not
expose himself or herself to the
sun too much.

31. Valuing

There are many other things
that affect our lives on earth.
God has a purpose in creating
all the things in this world to
benefit us.

32. Evaluation
A. Draw one good effect of
heat and light from the sun
and write three sentences
about it.
B. Fill in the blanks to
complete the sentences by
choosing your answer from
the words inside the box.
(p.345-A)

33. Evaluation
C. Answer the following questions
1. How does the sunlight help in
producing
Vitamin D.
2. How can you protect yourself from
the harmful effects of the sun’s heat?
3. What are the good effects of the
sun?
4. What do you think would happen on
Earth if the sun does not shine on it?